Custom Big Size EPDM Resilient Seat Gate Valve AWWA Standard Factories, Factory

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Custom Big Size EPDM Resilient Seat Gate Valve AWWA Standard Factories, Factory

Type: Resilient Seated

Series: Z45X-10/16/25

Size: DN40-DN600/2â€-24â€

Pressure rating: PN6/PN10/PN16/PN25

Design standard: AWWA C509

Service: OEM&ODM

The resilient-seated gate valve is a commonly used device for fluid pipeline isolation and shut-off. Its gate plate moves perpendicularly to the fluid flow path to open or close the valve. It is important to note that the valve is suitable only for full open/close scenarios, rather than flow adjustment or throttling purposes.

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Product Description

Technical Specifications

Valve Type:	Resilient seat gate valve	Structure:	Non-rising type
Standard:	AWWA C509	Workmanship:	Investment casting
Sealing Direction:	Bidirectional	Sealing Grade:	Zero leakage
Temperature:	-20°C < T < 120°C	Operation:	Handwheel

Key Characteristics

The gate plate of a resilient-seated gate valve typically employs an integral encapsulation process. The rubber sealing face is capable of compensating for minor imperfections on the sealing interface via elastic deformation, thereby achieving zero leakage. Meanwhile, a triple-layered O-ring seal is fitted around the valve stem, providing highly effective protection against medium leakage.

Core Advantages

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Ultra Large Flow Capacity & Low Pressure Loss:

The large-diameter design is suitable for large flow transmission needs such as main pipelines and pump stations. When fully open, the flow channel is straight through, effectively reducing energy consumption. The flat-bottom design prevents debris accumulation, ensuring smooth fluid flow.

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Corrosion & Wear Resistance:

Ductile iron valve body with epoxy resin powder coating (acid and alkali resistant). The stainless steel stem and multiple O-rings prevent rusting. High-performance EPDM or NBR rubber ensures anti-aging and extended service life.

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Remote Control & Easy Maintenance:

Compatible with electric and pneumatic actuators for smart network automation. Optimized stem sealing reduces friction for manual operation and supports seal replacement under pressure without system downtime.

Application Scenarios

The resilient-seated gate valve is widely utilized for water supply and drainage, sewage treatment, HVAC systems, and light industrial fluid handling systems.

Packing

Standard export wooden case packaging is used to ensure safety during international transportation.

Material Options

Body	Plate	Stem	Stem Nut	Seat Material	Temp Range (°C)
Cast Iron (HT200/250)	Ductile Iron	20CR13	Brass	EPDM Rubber	-20 ~ 120
Ductile Iron (GGG40/50)	Ductile Iron	SS304	SS304	NBR Rubber	-30 ~ 100
Carbon Steel (WCB)	WCB	SS304/SS316	SS304/SS316	FKM/VITON	-20 ~ 200
Stainless Steel (CF8/SS304)	CF8	SS304	Brass/SS	PTFE	-200 ~ 260

Product Dimensions

Frequently Asked Questions

What makes the "resilient seat" different from traditional gate valves?

Unlike metal-seated valves, resilient seat gate valves use a rubber-encapsulated gate that deforms slightly to create a perfect seal against imperfections, ensuring zero leakage.

Can this valve be used for wastewater applications?

Yes, the flat-bottom design and epoxy coating make it ideal for fluids containing impurities and sewage treatment systems.

Is the valve stem seal replaceable?

Yes, the structure allows for the replacement of the O-ring stem seals under pressure, which avoids system downtime.

Does it support automated operation?

Absolutely. While the standard version is handwheel-operated, it can be equipped with electric or pneumatic actuators for remote control.

What standards are followed for international exports?

Our valves comply with major international standards including AWWA C509, ensuring compatibility and reliability for global projects.