Model NO.GL500X
TemperatureOrdinary Temperature
ConnectionFlange
PressureAdjustable
StructureDiaphragm/ Piston
MaterialCi, Di, CS, Ss etc
Pressure RatingPn10, Pn16, Pn25, Pn40
SpecificationDN50 ~ DN800
Pressure Sustaining / Swift pressure relief/ Emergency Open Valve (MODEL NO.: GL500X)
Δ Pressure relief valve: This valve releases pressure from the pipeline when the pressure is higher than a preset data by the pilot. It keeps the pressure in pipeline safely below a certain value and protects pipeline equipment from damage due to high pressure or sudden pressure wave.
This model can be used to release pressure for fire protection testing recycling system in high building and protect system from danger of high pressure.
Δ Pressure Sustaining/holding valve: This valve also functions to keep upper stream pressure higher than a preset data by the pilot so as to secure the upper stream water supply pressure.
Emergency Open Valve: This valve can be mounted at the outlet port of fire spraying pump. It will immediately open when the pressure at pump outlet port is higher than a preset value.
Pressure rating: PN10, PN16, PN25, PN40 , CL150, CL300
Size: DN50-DN800
As a medium-sized professional valve manufacturer, the company is dedicated to making all kinds of water supplying and drainage valves, mainly including check valves, water control valves, pump control valves, flow and pressure regulating valves, strainers, air release valves etc. All efforts are focused on product research, design, production, sales, and installation services.
With nearly 30 years of development, the facility owns advanced processing and inspecting equipment. Products feature innovative design, advanced structure, and outstanding workmanship. Operating under strict quality control systems and scientific management, the company has achieved excellence in product development, manufacture, and testing.
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Frequently Asked Questions
Are you a trading company or factory?
We are a manufacturer factory and we also have our own exporting license.
Do you have certificates?
Yes, we hold ISO and CE certificates. We also have several design patents.
How do you control the product quality?
We use spectro PMI machines at raw material, production, and dispatch stages. Every unit undergoes body strength and water pressure testing twice—once before epoxy coating and once after assembly.
How do you handle quality problems?
We prioritize customer satisfaction. Depending on the condition, we offer replacement, compensation, or resending goods after discussion.
What is the standard delivery time?
Normal products are usually ready in 15 days; bulk orders typically take 20-30 days depending on the volume.
What is the warranty period for your valves?
We provide a 1-year warranty for all our products. Please note that gaskets and easy-wear parts are excluded due to varying application environments.
ElvisCast Precision
Y Pattern Type
Angle Pattern Type
