Valvola a saracinesca o valvola a globo: come scegliere la valvola giusta per la tua condotta
Guida alle valvole a saracinesca: principi di funzionamento, tipologie e utilizzi (2026)
Dicembre 30, 2025
Valvola a saracinesca a coltello o valvola a sfera per fanghi abrasivi: quale è la migliore per l'industria mineraria?
APRILE 24, 2026
Valvola a globo manuale: progettazione, funzioni, tipologie e guida essenziale alla manutenzione.
Novembre 11, 2025
When designing or maintaining a piping system, choosing between a gate valve and a globe valve is a critical decision that directly affects fluid dynamics, system efficiency, and operational costs. Although both are linear motion valves, they are designed for fundamentally different functions.
Key Takeaway for Valve Selection:
Choose a Gate Valve when your pipeline requires reliable fluid isolation (on/off service) with minimal pressure drop and maximum flow efficiency. Gate valves should operate only in the fully open or fully closed position.
Choose a Globe Valve when your application requires accurate flow regulation, throttling, or frequent operation, and a higher pressure drop can be accepted.
Cos'è un Valvola a saracinesca?

Definizione e principio di funzionamento
A valvola a saracinesca is a linear-motion shutoff valve designed primarily for on/off fluid isolation in industrial piping systems. It uses a flat or wedge-shaped gate that moves vertically to open or close the flow path:
- Posizione aperta: The gate is fully lifted out of the flow, creating a nearly straight-through, full-bore passage with minimal calo di pressione e bassa resistenza ai fluidi.
- Posizione chiusa: The gate is pressed tightly into the seats, providing strong sigillatura bidirezionale and dependable isolation.
Because of this design, gate valves are ideal where you need full flow or full shutoff, not fine regolazione del flusso or throttling.
Key Components and Structure (OS&Y vs. Non-Rising Stem)
A quality gate valve is defined by a robust body, bonnet, stem, gate (disc), seats, and packing system. In U.S. industrial applications, stem design is critical:
- OS&Y (Outside Screw & Yoke / Rising Stem):
- The stem moves up and down outside the valve body, clearly showing valve position.
- Easier to inspect and maintain packing.
- Preferito per refineries, power plants, and critical isolation where visual position indication and safety are priorities.
- Non-Rising Stem:
- The stem rotates in place while the gate moves internally.
- More compact, ideal where spazio di installazione is limited or underground.
- comune in acquedotti comunali and buried pipelines.
Both types are built to handle demanding pressure, temperature, and fluid dynamics conditions when properly specified.
Common Applications in Heavy Industries
In the U.S. market, gate valves are the workhorse for heavy-duty isolation across multiple sectors, especially where portate elevate e bassa caduta di pressione sono essenziali:
- Gasolio: Crude oil lines, transmission pipelines, tank farm manifolds.
- Petrolchimica e raffinazione: Process headers, unit block valves, emergency isolation.
- Power & Boiler Systems: Main steam lines, feedwater lines, and auxiliary systems where a full-open, low-resistance path is critical.
- Acqua e acque reflue: Large-diameter lines, treatment plants, and distribution mains.
When we engineer and supply gate valves, we focus on durable sealing mechanisms, proven wear resistance, and long service life, ensuring reliable operation across the most demanding industrial piping systems in the United States.
Cos'è un Valvola a globo?

Definizione e principio di funzionamento
A valvola a globo is a linear-motion valve built for regolazione del flusso, not just on/off isolation. Inside, the flow path changes direction, forcing the fluid to pass through a posto a sedere where a disc moves up and down to control how much fluid gets through.
In parole povere:
- Turn the handwheel (or actuator) → stem moves up or down
- Disc lifts off the seat → more flow
- Disc moves toward the seat → less flow
- Disc fully contacts the seat → tight shutoff
Because of this design, globe valves are ideal for throttling and precise flow control, especially in U.S. industrial piping, boiler systems, HVAC, and process lines where you need repeatable, accurate adjustments.
Key Components and Structure (Plug Disc vs. Needle Disc)
Le parti principali di un valvola a globo for flow control:
- Corpo – “Globe-shaped” housing that creates the S-shaped fluid flow path
- Dimensione italiana – Covers the body and holds the stem packing
- gambo – Moves vertically to lift or lower the disc
- Sede – The sealing surface inside the body
- Disco – The main shutoff and throttling element
Two common disc types you’ll see in U.S. piping specs:
- Plug Disc
- Flat or slightly contoured face
- Buono per uso generale controllo di flusso and shutoff
- Ampiamente usato in sistemi di tubazioni industriali, cooling water, and process media
- Needle Disc
- Long, tapered point
- Progettato per very fine throttling and low-flow, high-precision applications
- comune in instrumentation lines, sampling, and chemical dosing
Choosing between plug disc and needle disc comes down to how precise you need your regolazione del flusso and how sensitive your system is to small changes in flow.

Common Applications in Flow Regulation
In the U.S. market, we use valvole a globo anywhere we care about flusso controllato, not just open/close:
- Boiler systems and steam lines – controlling steam flow, desuperheaters, heater bypass
- Chilled water and hot water loops – balancing flow in HVAC and building systems
- Processi industriali in chemical, oil & gas, pharma, and food plants
- Fuel oil and lube oil systems – smooth, accurate flow control without big pressure swings
- Water treatment and utility lines – modulating valves where flow setpoints matter
Se avete bisogno di stable throttling, predictable pressure drop, and repeatable flow control in your pipeline, a valvola a globo is usually the first valve type I look at before gate, ball, or butterfly options.
Globe Valve vs Gate Valve: Key Differences Compared

Design & internal structure (linear motion vs. fluid path)
Entrambi sono moto lineare valves (the stem moves up/down), but the inside geometry is the real difference in sistemi di tubazioni:
- Gate valve (fluid isolation): a “gate” lifts fully out of the fluid flow path. When open, it’s close to a straight shot.
- Globe valve (flow regulation): a disc/plug moves toward a seat inside a curved body, forcing the flow to turn.
Bottom line: I treat a valvola a saracinesca come shutoff mechanism first, and a valvola a globo come controllo di flusso strumento.
Flow direction & fluid resistance (straight-through vs. S-shaped path)
Qui è dove calo di pressione e resistenza ai fluidi show up fast—especially in high-flow industrial piping.
- Valvola a saracinesca: Di Più dritto flow → typically minore caduta di pressione when fully open.
- Valvola a globo: Di Più S-shaped path → tipicamente higher pressure drop, but better control.
Flow direction note: many globe valves are unidirezionale (preferred flow arrow). Gate valves are usually bidirezionale for shutoff.
Flow control & throttling (why gates fail at throttling)
Se avete bisogno di regolazione del flusso, a globe valve wins on throttling capability.
- Valvola a globo: built for throttling—stable control, predictable response, better for impianto caldaia trim and process control.
- Valvola a saracinesca: not meant for throttling. Partially open creates high-velocity jets that can:
- chew up seating surfaces (erosion)
- cause chatter/vibration
- make it hard to hold a steady setpoint
Rule I use: Gate = on/off isolation. Globe = di controllo.
Sealing mechanism & wear resistance (friction + maintenance)
The sealing surfaces and contact style drive wear and maintenance in real-world componenti della conduttura.
- Gate valve sealing mechanism: wedge/parallel seats seal best completamente chiuso; minimal friction when fully open.
- Globe valve sealing mechanism: disc/plug seats with more frequent movement under load; great control but more wear over time in dirty service.
Realtà della manutenzione: globe valves often see more seat/plug wear in constant throttling duty; gate valves can suffer badly if used for throttling or cycled under debris.
Quick comparison table (US-style selection snapshot)
| Argomento | Valvola a saracinesca | Valvola a globo |
|---|---|---|
| Lavoro principale | Isolamento fluido | Flow regulation / flow control |
| percorso del flusso | Straight-through (when open) | S-shaped / turned path |
| Calo di pressione | Lower (fully open) | Higher (by design) |
| Throttling capability | Poor (risk of damage) | Strong, stable control |
| Direzione del flusso | Generalmente bidirezionale | Often preferred direction |
| Modello di usura | Seats suffer if throttled | Seats/plug wear with frequent control |
If your priority is low pressure drop and tight shutoff, I go gate. If your priority is controllable flow and repeatable tuning, I go globe.
Confronto vantaggi e svantaggi
Pros and Cons of Gate Valves
Gate valves are my go‑to when a pipeline needs simple on/off fluid isolation con il minimo calo di pressione.
Pros of Gate Valves
- Bassa caduta di pressione: Almost straight‑through fluid flow path, ideal for long U.S. transmission lines and city water mains.
- Bi‑directional sealing: Works in either flow direction, easy to design into existing piping systems.
- Great for full open/close: Strong shutoff mechanism when fully seated.
- Ampia gamma di dimensioni: Common from small HVAC lines to large refinery and power plant lines.
Cons of Gate Valves
- Poor throttling capability: Not suitable for flow control or regulation; partial opening causes erosion and vibration.
- Funzionamento più lento: Multi‑turn linear motion; not ideal where you need fast shutoff.
- More height required: Rising stem designs need vertical space in tight mechanical rooms.
- Seat wear if misused: Using a gate valve like a globe valve for flow regulation will shorten its life quickly.
| Articolo | Gate Valve Verdict |
|---|---|
| Migliore utilizzo | On/off isolation |
| Throttling / flow control | Non raccomandato |
| Calo di pressione | Molto basso |
| Typical U.S. applications | Water mains, oil & gas, fire lines |
Pros and Cons of Globe Valves
Globe valves are what I use when regolazione del flusso e controllo preciso matter more than low pressure drop.
Pros of Globe Valves
- Excellent throttling capability: Designed for smooth flow control and frequent adjustment.
- Better shutoff in control duty: Strong sealing mechanism under differential pressure.
- Good for high‑pressure services: Common in boiler systems, steam lines, and process control.
- Predictable fluid resistance: Easier to size for a given Cv and pressure drop.
Cons of Globe Valves
- Higher pressure drop: S‑shaped fluid flow path creates more fluid resistance, which can raise pumping costs.
- Typically uni‑directional: Needs correct installation relative to flow direction.
- Higher operating torque: More effort or bigger actuator than a similar gate valve.
- Larger footprint in line: Heavier and bulkier compared with ball or butterfly valves of same size.
| Articolo | Globe Valve Verdict |
|---|---|
| Migliore utilizzo | Flow control / throttling |
| Throttling capability | Ottimo |
| Calo di pressione | Da moderato a alto |
| Typical U.S. applications | HVAC control, steam, process piping |
Engineering Insights: Real-World Risks of Incorrect Selection
What Happens if You Use a Gate Valve for Throttling? (Erosion & Vibration)
When you use a gate valve for flow control or throttling instead of full open/close, you’re asking for trouble:
- Severe erosion of the gate and seats
- Partially open gate valves create a high-velocity jet that slams into the disc and seat.
- In abrasive or dirty service (sand, scale, slurry, boiler feedwater), that jet eats away metal fast.
- You’ll see scoring, wire-drawing, and eventually leak-by and lost shutoff.
- Vibrazioni e rumori
- The flow path around a half-open gate is unstable, so you get turbulence and vibration.
- That vibration travels into the piping system, supports, and actuators, accorciandone la vita.
- On high-pressure or high-temperature lines, that’s a real safety risk, not just a comfort issue.
- Stuck or jammed valves
- Uneven wear and debris buildup can cause the gate to stick in the guides.
- Operators end up applying extra torque, bending stems, or cracking packing glands.
In real U.S. plants—refineries, power, and water systems—every time we see a gate valve used as a throttling valve, we also see higher maintenance, unplanned outages, and safety reviews. If you need flow regulation, I choose a valvola a globo valvola di controllo, not a gate.
The Cost Impact of Pressure Drop in High-Flow Pipelines
Wrong valve selection doesn’t just wear out hardware; it quietly burns money through calo di pressione:
- More pump or compressor horsepower
- A globe valve used where a gate valve (or ball/butterfly) would do can create a big calo di pressione in high-flow, large-bore lines.
- That extra differential pressure means higher pump energy, larger motors, and bigger VFDs.
- On U.S. industrial or municipal systems, that can mean thousands of dollars per year in power for a single valve.
- Lost capacity and throughput
- Extra resistance in the fluid flow path reduces available flow at the same pressure.
- For production pipelines, that’s less product moved per hour and real revenue loss.
- Oversized equipment and CAPEX creep
- To overcome unnecessary pressure drop, engineers end up oversizing pumps, pipes, and controls durante la progettazione.
- The project looks fine on paper, but you’ve locked in a higher costo del ciclo di vita dal primo giorno.
For high-flow pipelines in the U.S.—crude, gas, cooling water, district energy—I always balance fluid isolation, regolazione del flussoe calo di pressione. Gate valves (or ball/butterfly valves) usually win on low fluid resistance; globe valves win on controllo preciso del flusso. Picking the wrong one shows up later on your utility bill and maintenance budget, non solo in una scheda tecnica.
Come scegliere tra un Gate Valve vs Globe Valve (Right Fit for Your Pipeline)
Operating environment, fluid medium, and working pressure
Quando devo scegliere tra un gate valve vs globe valve, I start with what the pipeline actually needs: fluid isolation or regolazione del flusso.
- Need full open/close (shutoff mechanism)? Go valvola a saracinesca (meglio per bidirezionale isolation and low resistenza ai fluidi when fully open).
- Need steady flow control / throttling capability? Go valvola a globo (built for moto lineare control and stable regolazione del flusso).
- Working pressure & temperature:
- Higher temps/steam (common in a impianto caldaia) often favors valvole a globo for control points.
- High-flow liquids where calo di pressione matters often favors saracinesche for isolation points.
- Dirty or abrasive media (slurry, scale, rust): Prefer simpler isolation or a valve style designed for it; throttling with the wrong valve can chew up internals fast.
Quick pick (real-world rule):
- Isolation on a main line = cancello
- Control on a branch, bypass, or process line = Globo
Installation space and maintenance considerations
Space and service access matter in US plants—especially in tight mechanical rooms and crowded racks.
- Gate valve fit: Great when you can cycle it fully open/closed and leave it there.
- Rising stem (OS&Y): easier visual position check, but needs vertical clearance.
- Non-rising stem: better for tight spaces, but position is less obvious.
- Globe valve fit: Usually heavier, with a more complex meccanismo di sigillatura, but easier to service for control duty.
- Plan for more frequent attention if it’s used often for controllo di flusso.
Maintenance reality check
- If crews will actually inspect/grease/operate the valve regularly, globe valves are fine for control points.
- If it’s a “set it and forget it” line, gate valves usually win for simple tubazioni industriali isolamento.
Total cost of ownership (TCO) and long-term value
I don’t buy valves by sticker price—I buy them by what they cost after 2–5 years in the line.
| Cost Factor (TCO) | Valvola a saracinesca | Valvola a globo |
|---|---|---|
| Best value use-case | Isolamento fluido on mains | Regolazione del flusso / throttling |
| Energy cost impact | Low when fully open (low calo di pressione) | Più elevato calo di pressione a causa di fluid flow path |
| Rischio di usura | Higher if misused for throttling | Lower for throttling; built for it |
| Frequenza di manutenzione | Lower in on/off service | Higher in frequent control service |
| Failure cost risk | High if used wrong (seat damage) | Lower for control points |
Bottom line: If the line runs 24/7 at high flow, calo di pressione becomes an energy bill. That often pushes me toward saracinesche for isolation and valvole a globo only where control is truly needed.
Beyond gate and globe: when to consider ball or butterfly valves?
A volte gate valve vs globe valve isn’t the best match for the job—especially in modern sistemi di tubazioni.
- Valvole a sfera (great alternative for isolation):
- Fast quarter-turn operation
- Strong shutoff, compact
- Great for most clean liquids and gases in industrial piping
- Valvole a farfalla (great for big lines and tight spaces):
- Lightweight, cost-effective on large diameters
- Good for water/HVAC/process where compact componenti della conduttura importanza
- Watch the application details (seat type, torque, and required shutoff)
Simple decision add-on
- Need fast on/off + compact? Valvola a sfera
- Need large diameter + low weight? Valvola a farfalla
- Need precise controllo di flusso? Valvola a globo
- Need low loss isolation on a main line? Valvola a saracinesca
Domande frequenti (FAQ)
1. Is a gate valve or globe valve better for on/off service?
Per puro fluid isolation (fully open or fully closed), I go with a valvola a saracinesca. It’s bi-directional, offers a straighter fluid flow path, and gives you less calo di pressione in most piping systems.
2. When should I use a globe valve instead of a gate valve?
Utilizzare valvola a globo quando hai bisogno regolazione del flusso or throttling capability—like fine control in boiler systems, process lines, or where you care about precise controllo di flusso instead of just open/close.
3. Can I throttle with a gate valve?
I don’t recommend it. Throttling with a gate valve causes vibration, erosion, and seat damage. That kills the sealing surfaces fast and blows up your maintenance costs.
4. Which valve has lower pressure drop?
In generale, a valvola a saracinesca ha più basso resistenza ai fluidi because of the straighter path. A valvola a globo has an S-shaped path, so you get higher calo di pressione, especially at high flow.
5. Are gate and globe valves both bi-directional?
ponte saracinesche sono completamente bidirezionale. Molti valvole a globo are designed with a preferred direzione del flusso to reduce wear and improve sealing, so I always follow the arrow on the body.
6. When should I consider ball or butterfly valves instead?
Se vuoi:
- Very low pressure drop and tight shutoff → valvola a sfera
- Large diameter, lighter weight, and lower cost per inch → valvola a farfalla
I often use gate/globe for traditional tubazioni industriali, and ball/butterfly when space, actuation, and cost drive the decision.
Still Unsure Which Valve Fits Your Project?
Choosing between a gate and a globe valve involves complex fluid dynamics. An incorrect selection can risk pipeline downtime or premature erosion.
As a trusted industrial valve manufacturer, DELCO VALVE provides high-performance gate, globe, ball, and butterfly valves compliant with API, ASME, and ISO standards. Our engineering team is here to help you select the exact valve type, size, and material for your specific piping system.
- Higher pressure drop: S‑shaped fluid flow path creates more fluid resistance, which can raise pumping costs.
- Typically uni‑directional: Needs correct installation relative to flow direction.
- Higher operating torque: More effort or bigger actuator than a similar gate valve.
- Larger footprint in line: Heavier and bulkier compared with ball or butterfly valves of same size.
| Articolo | Globe Valve Verdict |
|---|---|
| Migliore utilizzo | Flow control / throttling |
| Throttling capability | Ottimo |
| Calo di pressione | Da moderato a alto |
| Typical U.S. applications | HVAC control, steam, process piping |
Engineering Insights: Real-World Risks of Incorrect Selection
What Happens if You Use a Gate Valve for Throttling? (Erosion & Vibration)
When you use a gate valve for flow control or throttling instead of full open/close, you’re asking for trouble:
- Severe erosion of the gate and seats
- Partially open gate valves create a high-velocity jet that slams into the disc and seat.
- In abrasive or dirty service (sand, scale, slurry, boiler feedwater), that jet eats away metal fast.
- You’ll see scoring, wire-drawing, and eventually leak-by and lost shutoff.
- Vibrazioni e rumori
- The flow path around a half-open gate is unstable, so you get turbulence and vibration.
- That vibration travels into the piping system, supports, and actuators, accorciandone la vita.
- On high-pressure or high-temperature lines, that’s a real safety risk, not just a comfort issue.
- Stuck or jammed valves
- Uneven wear and debris buildup can cause the gate to stick in the guides.
- Operators end up applying extra torque, bending stems, or cracking packing glands.
In real U.S. plants—refineries, power, and water systems—every time we see a gate valve used as a throttling valve, we also see higher maintenance, unplanned outages, and safety reviews. If you need flow regulation, I choose a valvola a globo valvola di controllo, not a gate.
The Cost Impact of Pressure Drop in High-Flow Pipelines
Wrong valve selection doesn’t just wear out hardware; it quietly burns money through calo di pressione:
- More pump or compressor horsepower
- A globe valve used where a gate valve (or ball/butterfly) would do can create a big calo di pressione in high-flow, large-bore lines.
- That extra differential pressure means higher pump energy, larger motors, and bigger VFDs.
- On U.S. industrial or municipal systems, that can mean thousands of dollars per year in power for a single valve.
- Lost capacity and throughput
- Extra resistance in the fluid flow path reduces available flow at the same pressure.
- For production pipelines, that’s less product moved per hour and real revenue loss.
- Oversized equipment and CAPEX creep
- To overcome unnecessary pressure drop, engineers end up oversizing pumps, pipes, and controls durante la progettazione.
- The project looks fine on paper, but you’ve locked in a higher costo del ciclo di vita dal primo giorno.
For high-flow pipelines in the U.S.—crude, gas, cooling water, district energy—I always balance fluid isolation, regolazione del flussoe calo di pressione. Gate valves (or ball/butterfly valves) usually win on low fluid resistance; globe valves win on controllo preciso del flusso. Picking the wrong one shows up later on your utility bill and maintenance budget, non solo in una scheda tecnica.
Come scegliere tra un Gate Valve vs Globe Valve (Right Fit for Your Pipeline)
Operating environment, fluid medium, and working pressure
Quando devo scegliere tra un gate valve vs globe valve, I start with what the pipeline actually needs: fluid isolation or regolazione del flusso.
- Need full open/close (shutoff mechanism)? Go valvola a saracinesca (meglio per bidirezionale isolation and low resistenza ai fluidi when fully open).
- Need steady flow control / throttling capability? Go valvola a globo (built for moto lineare control and stable regolazione del flusso).
- Working pressure & temperature:
- Higher temps/steam (common in a impianto caldaia) often favors valvole a globo for control points.
- High-flow liquids where calo di pressione matters often favors saracinesche for isolation points.
- Dirty or abrasive media (slurry, scale, rust): Prefer simpler isolation or a valve style designed for it; throttling with the wrong valve can chew up internals fast.
Quick pick (real-world rule):
- Isolation on a main line = cancello
- Control on a branch, bypass, or process line = Globo
Installation space and maintenance considerations
Space and service access matter in US plants—especially in tight mechanical rooms and crowded racks.
- Gate valve fit: Great when you can cycle it fully open/closed and leave it there.
- Rising stem (OS&Y): easier visual position check, but needs vertical clearance.
- Non-rising stem: better for tight spaces, but position is less obvious.
- Globe valve fit: Usually heavier, with a more complex meccanismo di sigillatura, but easier to service for control duty.
- Plan for more frequent attention if it’s used often for controllo di flusso.
Maintenance reality check
- If crews will actually inspect/grease/operate the valve regularly, globe valves are fine for control points.
- If it’s a “set it and forget it” line, gate valves usually win for simple tubazioni industriali isolamento.
Total cost of ownership (TCO) and long-term value
I don’t buy valves by sticker price—I buy them by what they cost after 2–5 years in the line.
| Cost Factor (TCO) | Valvola a saracinesca | Valvola a globo |
|---|---|---|
| Best value use-case | Isolamento fluido on mains | Regolazione del flusso / throttling |
| Energy cost impact | Low when fully open (low calo di pressione) | Più elevato calo di pressione a causa di fluid flow path |
| Rischio di usura | Higher if misused for throttling | Lower for throttling; built for it |
| Frequenza di manutenzione | Lower in on/off service | Higher in frequent control service |
| Failure cost risk | High if used wrong (seat damage) | Lower for control points |
Bottom line: If the line runs 24/7 at high flow, calo di pressione becomes an energy bill. That often pushes me toward saracinesche for isolation and valvole a globo only where control is truly needed.
Beyond gate and globe: when to consider ball or butterfly valves?
A volte gate valve vs globe valve isn’t the best match for the job—especially in modern sistemi di tubazioni.
- Valvole a sfera (great alternative for isolation):
- Fast quarter-turn operation
- Strong shutoff, compact
- Great for most clean liquids and gases in industrial piping
- Valvole a farfalla (great for big lines and tight spaces):
- Lightweight, cost-effective on large diameters
- Good for water/HVAC/process where compact componenti della conduttura importanza
- Watch the application details (seat type, torque, and required shutoff)
Simple decision add-on
- Need fast on/off + compact? Valvola a sfera
- Need large diameter + low weight? Valvola a farfalla
- Need precise controllo di flusso? Valvola a globo
- Need low loss isolation on a main line? Valvola a saracinesca
Domande frequenti (FAQ)
1. Is a gate valve or globe valve better for on/off service?
Per puro fluid isolation (fully open or fully closed), I go with a valvola a saracinesca. It’s bi-directional, offers a straighter fluid flow path, and gives you less calo di pressione in most piping systems.
2. When should I use a globe valve instead of a gate valve?
Utilizzare valvola a globo quando hai bisogno regolazione del flusso or throttling capability—like fine control in boiler systems, process lines, or where you care about precise controllo di flusso instead of just open/close.
3. Can I throttle with a gate valve?
I don’t recommend it. Throttling with a gate valve causes vibration, erosion, and seat damage. That kills the sealing surfaces fast and blows up your maintenance costs.
4. Which valve has lower pressure drop?
In generale, a valvola a saracinesca ha più basso resistenza ai fluidi because of the straighter path. A valvola a globo has an S-shaped path, so you get higher calo di pressione, especially at high flow.
5. Are gate and globe valves both bi-directional?
ponte saracinesche sono completamente bidirezionale. Molti valvole a globo are designed with a preferred direzione del flusso to reduce wear and improve sealing, so I always follow the arrow on the body.
6. When should I consider ball or butterfly valves instead?
Se vuoi:
- Very low pressure drop and tight shutoff → valvola a sfera
- Large diameter, lighter weight, and lower cost per inch → valvola a farfalla
I often use gate/globe for traditional tubazioni industriali, and ball/butterfly when space, actuation, and cost drive the decision.
Still Unsure Which Valve Fits Your Project?
Choosing between a gate and a globe valve involves complex fluid dynamics. An incorrect selection can risk pipeline downtime or premature erosion.
As a trusted industrial valve manufacturer, DELCO VALVE provides high-performance gate, globe, ball, and butterfly valves compliant with API, ASME, and ISO standards. Our engineering team is here to help you select the exact valve type, size, and material for your specific piping system.
- PRECEDENTE: Standard e certificazioni essenziali per le valvole nei progetti minerari in America Latina
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