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    5. DELCO Normally Closed Stem Welded Pneumatic Angle Seat Piston Valves

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    Angle seat valves
    Angle seat valve
    Welded angle seat valves

    DELCO Normally Closed Stem Welded Pneumatic Angle Seat Piston Valves

    The DELCO Welded Pneumatic Angle Seat Piston Valves are designed for use with all types of liquids and gases. Valves made of copperplate are ideal for applications involving water, oil, and compressed air. On the other hand, the stainless steel version is suited for both neutral and aggressive liquid and gaseous media. These valves are also capable of operating in rough vacuum environments. The maximum working pressure is 16 bar (232 psi), though this may vary depending on the specific valve model.

    Model: Welded Angle Seat Valve
    Size Range: 1/2”~2-1/2”
    Pressure Range: 0~1.6MPa
    Material: Stainless Steel 304/306

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      DELCO Pneumatic Welded Angle Seat Piston Valves

      A pneumatic angle seat valve offers a high flow rate and can operate at zero pressure difference and high temperatures. It is also suitable for handling high viscosity and dirty media. To operate in an explosive environment (Eex area), simply place the pilot valve outside the area. The valve is controlled by a pneumatic actuator driven by a three-way solenoid valve. The pilot medium pressure enters the actuator cylinder, pushing the piston to open or close the gasket through the stem. The gasket returns to its default position thanks to the return spring in the pneumatic actuator.
      There are two types of pneumatic angle seat valves: single-acting and double-acting.

      Single-Acting Valve

      • Design: Typically has one port on the pneumatic head.
      • Operation: Uses a spring to return to its default position. It is further classified into normally open and normally closed types based on the spring function.

      Double-Acting Valve

      • Design: Typically has two ports on the pneumatic head.
      • Operation: The air supply controls the opening and closing. For more precise control, a double-acting valve can be combined with a spring return, as per customer requirements.

      Technical Parameters of Valve Body

      Actuator material Stainless steel or PolyamidePA Body material SS304, 316, 316L
      Seat material PTFE, F46 Stem material SS304, 316, 316L
      Ambient temp -30℃~180℃ Pressure 0~1.6MPa
      Connection Type Welding, flange, thread, clamp Control type Single-acting, double-acting
      Applicable medium Water, natural gas or liquid alcohol, oil, organic solvent, steam Optional accessory Solenoid valve, limit switch box, positioner, etc

      Welded Angle Seat Valve

      Angle seat valves
      Welded angle seat valves
      Size Inch d D L H A E Actuatar
      DN15 1/2″ 15.5 19.5 100 137 175 64 50
      DN20 3/4″ 21.5 26.5 120 145 180 64 50
      DN25 1″ 28.5 32.5 140 185 215 80 63
      DN32 1-1/4″ 33 38.5 155 210 235 80 63
      DN40 1-1/2″ 46 52 170 260 245 80 63
      DN50 2″ 57 64 190 300 325 100 80
      DN65 2-1/2″ 68 77 200 340 355 100 80
      DN80 3″ 82 92 220 385 400 126 100

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          DELCO Valve provides OEM service for many world-famous brands, and we are able to design and manufacture industrial valves according to customer’s requirements.

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