Zhejiang, China
Business Type:
Manufacturer/Factory & Trading Company
Main Products:
Number of Employees:
Year of Establishment:
Management System Certification:
ISO9001:2015 certificate
OEM/ODM Service
Sample Available

Fast Close Hydraulic Check Valve, Non Slam Check Valve, API Check Valve manufacturer / supplier in China, offering Slow Open Fast Close Hydraulic Check Valve (GL30XB), Micro Type Air Release Valve (ARVX) Vacuum Breaker Suction Valve, (CARX) Combination Type Vacuum Breaker Air Release Valve and so on.

Gold Member Since 2007
Audited Supplier

Slow Open Fast Close Hydraulic Check Valve (GL30XB)

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Min. Order / Reference FOB Price
1 Piece US $20-300/ Piece
Port: Ningbo, China
Production Capacity: 2000PCS/Year
Payment Terms: L/C, T/T
Material: Ci, Di, CS, Ss etc
Connection Form: Flange
Structure: Elevated
Pressure: Ordinary Pressure
Function: Nrvz Silence, Nrvg Silence
Sealing Form: Soft Seat Ring & Metal Seat

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Basic Info

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)
Trademark: KARFAR
Transport Package: Bubble Plastic Paper + Plywood Case
Specification: DN50 ~ DN1800
Origin: China

Product Description

Slow Open Fast Close Hydraulic Check Valve 

Slow Open Fast Close Hydraulic Check Valve (GL30XB)Slow Open Fast Close Hydraulic Check Valve (GL30XB)

                Diaphram type                                                                    Piston type

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 appliableWater, Oil etc.
Main materialDuctile iron, WCB, Stainless steel etc.
Suitable Temperature≤80ºC
Nominal PressurePN10--PN25
Nominal DiameterDN50--DN1800
Flange DimensionASME B16.42, BS4504, ISO2531, ISO7005 etc
Face to Face LengthAPI594,BS5155, ISO5752, DIN3352 etc
Slow Open Fast Close Hydraulic Check Valve (GL30XB)
Slow Open Fast Close Hydraulic Check Valve (GL30XB)

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