Anti Water Hammer Proof Slow Open Fast Close Hydraulic Check Valve (GL30XB)

• Model NO.: GL30XB
• Flow Direction: Unidirection
• Standard: ANSI, API, DIN, BS, GB etc
• Application: Industrial Usage, Household Usage
• Certificate: ISO, Ce
• Pressure Rating: Pn10, Pn16, Pn25, Pn40 (Cl150, Cl300)
• Transport Package: Bubble Plastic Paper + Plywood Case
• Specification: DN50 ~ DN1800
• Trademark: KARFAR
• Origin: China
• Production Capacity: 2000PCS/Year

Product Description

Slow Open Fast Close Hydraulic Check Valve 
MODEL NO. GL30XB
      

Δ  The KARFAR Model GL30XA Slow open Slow shut check valve is multifunctional valve. It opens slowly and shut slowly to eliminate water hammer and prevent back flow. Single set of GL30XA can function to replace non-return valve, electric control valve and pressure surge eliminator. It is often mounted at the outlet side of the pump. In response to pilot signal, it slowly opens when the pump starts up. During the operation, the valve is fully opened under medium pressure, Since the chamber is connected with air, water loss is nearly none. When pump stops working, the valve slowly shuts to avoid pressure surge and slamming noise.

Δ low water loss, nearly zero. Controlling pressure less than 0.05Mpa and coefficient of shock resistance is less than 1.0Mpa.

Δ When pump stops working, the valve rapidly 100% closes within 0.5 second avoiding pressure surge and slamming noise.

Δ It isolates the pump from the system during pump starting: When pump starts up, the valve is closed. When the pressure rises to the preset value, the valve slowly opens so as to avoid damage on the pump engine  from extra large currency.
 

Medium appliable	Water, Oil etc.
Main material	Ductile iron, WCB, Stainless steel etc.
Suitable Temperature	≤80ºC
Nominal Pressure	PN10--PN25
Nominal Diameter	DN50--DN1800
Flange Dimension	ASME B16.42, BS4504, ISO2531, ISO7005 etc
Face to Face Length	API594,BS5155, ISO5752, DIN3352 etc