Angle Pattern Diaphragm Emergency Open Pressure Holding Relief Valve (GL500XA)

Customization:	Available
Media:	Water, Oil, etc
Certification:	ISO, CE

Overview & Basic Information

Model NO.

500XA

Temperature

Ordinary Temperature

Connection

Flange

Pressure

Adjustable

Structure

Diaphragm(Pn10~25) / Piston (Pn40 More)

Material

Ci, Di, CS, Ss etc

Applicable Medium

Water, Oil etc

Pressure Rating

Pn10, Pn16, Pn25, Pn40 (Cl150, Cl300)

Specification

DN50 ~ DN800

Production Capacity

5000PCS/Month

Product Description

Angle Body Pressure Sustaining / Swift Pressure Relief / Emergency Open Valve (MODEL NO.: GL500XA)

🛡️

Pressure Relief Valve: Releases pressure when it exceeds a preset limit, protecting equipment from sudden waves or damage.

🔄

Pressure Sustaining Valve: Secures upstream water supply pressure by maintaining it above a preset value.

🚨

Emergency Open Valve: Mounts at fire spraying pump outlets; opens immediately if outlet pressure exceeds safety limits.

Pressure Rating: PN10, PN16, PN25, PN40, CL150, CL300
Size Range: DN50 - DN800

Product Parameters

Body & Bonnet	Cast iron, Ductile iron, Cast steel, Stainless steel etc
Stem	Stainless steel
Disc	Brass, Carbon steel, Ductile iron etc
Seat	Brass, Stainless steel, Carbon steel etc
Sealing / Diaphragm	NBR, EPDM etc
Flange Dimension	ASME B16.42, BS4504, ISO2531, ISO7005 etc.
Face to Face Length	API594, BS5155, ISO5752, DIN3352 etc.

Other Style Options:

Manufacturing Capability

As a medium-sized professional valve manufacturer, we are dedicated to producing a wide range of water supply and drainage valves. Our core product line includes check valves, water control valves, pump control valves, flow and pressure regulating valves, strainers, and air release valves. We manage everything from research and design to production, sales, and installation services.

Our facility is equipped with advanced processing and inspection technology. With nearly 30 years of development, we have established a strict quality control system. Our products are widely used in chemical industries, oil production, construction, fire protection, and large-scale water engineering projects worldwide.

Certifications

Frequently Asked Questions

1. Are you a trading company or a factory?

We are a manufacturer factory with our own exporting license, ensuring direct quality control and competitive pricing.

2. What quality certifications do you hold?

We hold ISO and CE certificates. Additionally, we possess several design patents for our valve structures.

3. How do you control the quality of your products?

We use spectro PMI machines for raw materials, pressure inspecting machines, and body strength test machines. Every valve undergoes water pressure testing twice: before resin epoxy coating and after final assembly.

4. What is your policy for quality issues?

We stand by our products. In the rare event of a quality issue, we offer replacements, compensation, or resend goods depending on the specific condition discussed with the customer.

5. What is the standard delivery time?

For normal products, the delivery time is approximately 15 days. For bulk orders, it typically ranges between 20 to 30 days depending on the specifications.

6. What is the warranty period for your valves?

We provide a 1-year warranty for all our products. Note that gaskets and consumable parts are excluded due to varied application environments.