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5. COVNA HK57 Series Pneumatic Actuated Double Union PVC Ball Valve

COVNA HK57 Pneumatic PVC Ball Valve, 2 way or 3 way port configuration, double acting standard control mode, single acting is available, UPVC or PVC body construction, CPVC is optional, 2.5 to 8bar input air pressure, minimum 1/2 inch union connection, inside female thread is optional, default EPPDM seat, common use for air, hot water, cold water, steam (low pressure).

  • Model: HK57
  • Size Range: 1/2" to 4"
  • Pressure Range: 1.0MPa
  • Material: PVC, CPVC, UPVC, PVDF

COVNA Pneumatic Double Union Plastic PVC 2 Way Ball Valve

● Features: Long Service Life, Eco-Friendly, Easy Installation, etc
● Actuator Type: Spring Return(Single Acting) and Double Acting
● Valve Type: 2-Ways &3-Ways Air Actuator Ball Valve (T Type and L Type)
● Rotation: Quarter-turn
● Pneumatic Valve alignment and support in any position.
● Connection Type: Double Union
● Suitable Medium: Water, Oil, Air, Gas, etc


 – Technical Parameter of Pneumatic Actuated Ball Valve

ModelHK57Acting ModelDouble Acting/Spring Return
Air Supply Pressure2.5-8 BarCertificationISO 9001, CE, TUV, SGS
Applicable StandardGBNo. Of Ways2 Way/3 Way
Port Size1/2"-4"End ConnectionDouble Union
Operating Pressure1.0-1.6MPAMediaWater, Oil, Air, Gas etc.
Body Material: Plastic,CPVCWorking Temperature-10°C to 180°C
Sealing MaterialEPDM, PTFEWarranty1 Year (12 Months)



Air actuated pvc ball valves are used for on-off control of water and other media compatible with the materials of construction. Spring return valves use air pressure to open the valve and springs (failsafe) to close the valve. Double acting valves use air to open and air to close the valve. Advantages of air actuated ball valves over other type valves may include: higher flow rates, higher pressures, wider media compatibility, straight through flow path, reduced water hammer, and use in hazardous environments.

COVNA pneumatic pvc ball valve catalog is provided, click download button above to gain mini plastic ball valve installation & pvc plastic ball valve dimensions, and how to lubricate plastic ball valves manual & plastic ball valve repair steps.

pvc pneumatic actuated ball valve


-Technical Parameter of Pneumatic Actuator-

Double acting Air to open, air to close, air supplier failure to keep the current position
Single acting N/C Air to open, interrupt air to close, air failure to close
Single acting N/O Air to close, interrupt air to open, air failure to open
Optional accessory Reversing solenoid valve, limit switch box, air filter reducing valve, positioner, handle manual, lock up valve.

pneumatic actuator


Accessories of Pneumatic Valve (1)

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