Electric Wafer Ball Valves

Ultra-Short Face-to-Face Profile

Engineered for piping assemblies where physical length is strictly restricted (DN15 to DN150 / 1/2" إلى 6"). Body thickness is minimized so the valve sandwiches cleanly between pipeline flanges, drastically reducing overall manifold dimensions.

• Reduces face-to-face length by up to 60% compared to ASME flanged valves
• Reduces valve assembly weight by 40% to 50%, saving pipe support costs
• Universal wafer drilling mates with ASME B16.5 150# and DIN PN16 flanges

Direct Tank-Bottom & Manifold Mounting

Designed with threaded blind bolt holes on the body face for direct bolting to storage tank bottom nozzles, reactor vessels, or compact pump headers without requiring an intermediary pipeline spool.

• Minimizes stagnant dead volume below vessel drain ports
• Simplifies emergency vessel isolation and gravity drain discharging
• Full investment-cast 304/316 stainless steel or WCB carbon steel construction

Extreme Space-Saving Length

With face-to-face dimensions as short as 36mm (DN25) to 84mm (DN100), our wafer thin bodies install easily into tight skids, modular container systems, and compact maritime machinery rooms.

حمل خط أنابيب أخف بنسبة 50٪

Eliminating traditional heavy flange necks reduces overall body mass by nearly half. Drastically reduces structural cantilever bending stress on pipeline supports, hanger rods, and vibration-prone platforms.

محاذاة الحافة الشاملة

External body locating lugs or precision bolt holes align smoothly between ASME B16.5 Class 150, EN 1092-1 PN16, وحواف JIS 10K, guaranteeing perfect concentric ball bore centering upon bolt torquing.

Unrestricted Full-Port Flow

Despite the compressed face-to-face body, DELCO preserves a true full-bore internal diameter. Delivers high flow coefficients (كوفيد) identical to standard flanged valves with zero throttling pressure loss.

Bracketless ISO 5211 Direct Mounting

Features an elevated ISO 5211 top flange. Electric actuators bolt directly onto the valve body without brackets, keeping center-of-gravity low and eliminating rotational hysteresis in tight spaces.

Class VI Bubble-Tight Sealing

Precision-machined virgin PTFE or reinforced RTFE seats provide dependable bidirectional Class VI shut-off under full differential pressure. Backed by live-loaded stem packing that prevents fugitive emissions.

1. How is a wafer thin ball valve mounted into a pipeline?

Unlike standard flanged valves that have their own bolt flanges on each end, a wafer ball valve is a "flangeless" sandwich body. It is inserted directly between two existing pipeline flanges. Long through-stud bolts pass outside the valve body, connecting the two pipe flanges and clamping the valve tightly in place with flange gaskets on each side.

2. How much space and weight does a wafer ball valve save over a standard flanged valve?

A standard DN50 (2") ASME B16.10 flanged ball valve has a face-to-face length of 178mm and weighs roughly 10 kg. A DELCO DN50 wafer ball valve has a face-to-face length of only 43mm (a 75% reduction in length) and weighs less than 4.5 kg. This dramatically reduces manifold depth, pipe weight loads, and overall skid packaging costs.

3. Can uneven flange bolt torquing cause the valve ball to bind or seize?

Because through-studs compress the entire wafer valve body, uneven tightening could theoretically distort thin-wall castings. DELCO prevents this by engineering heavy external locating lugs and ribbed body sidewalls that withstand high bolt pre-loads without body deflection. Flange studs should be tightened crosswise in progressive torque stages according to DELCO installation guidelines.

4. Can wafer ball valves be installed directly onto tank bottom drain nozzles?

نعم. DELCO manufactures wafer thin valves with drilled and tapped blind bolt holes on the body faces. This allows the valve to bolt directly onto tank bottom flanges or vessel drain nozzles. The ultra-short profile eliminates stagnant "أرجل ميتة" beneath the tank, ensuring complete drainage and preventing sediment accumulation.