30" Wafer Dual Plate Check Valve

NSV 30" Wafer Dual Plate Check Valve

The NSV 30" wafer type dual plate check valve is designed for large bore, medium pressure piping in water treatment, power, oil & gas, and municipal applications.The dual plate design with spring assist ensures responsive operation and effectively prevents backflow and water hammer.

Key Features

Body material: ASTM A216 WCB cast steel

Size range: DN750 (30")

Pressure rating: ANSI Class 150

Operating temperature: -29°C to +425°C (suitable for steam, hot water, oil)

Valve type: Wafer-style, dual plate

Sealing: Rubber soft seat (NBR or EPDM optional)

Spring assist: Enhances responsiveness and reduces water hammer

Installation: Wafer style, mounted between pipe flanges without additional flanges required

Standards: Designed per API 594, ASME B16.34, and ISO 5208

Typical applications

Municipal water mains, power plant cooling circuits, refinery utility water lines, fire pump discharge, district heating networks where reliable backflow prevention is essential.

FAQ

1. Q: What kinds of valves do you manufacture?

A: We usually manufacture valves made of various materials such as cast Iron/ carbon steel,stainless steel,Alloy steel and industrial valves such as ball, gate, globe, check, bellows seal and ETC. For detail information, please refer to " Download>E-Catalog” of homepage.
2. Q:What’s the packing for shipping?

A:Its carton for small valves(sample) and plywood case(don’t to fumigate).

3. Q: What’s the valves warranty?

A: Our valves warranty period should be 18 months from the date of shipment or 12 months after installation, whichever occurs first.
4. Q:How can I get a quote?

A: If you request quote by preparing the product spec you want to request specifically through “Contact us or Feedback” of homepage, we will send reply to you ASAP. If the contents of homepage are not available, you can inquire to us via phone(86-577-67378616) or fax(86-577-67372367).