Tilting Disc Check Valve With Counterweight

NSV Tilting Disc Check Valve With Counterweight

This Tilting Disc Check Valve With Counterweight is designed for demanding applications to prevent backflow in pipelines, especially suitable for vertical or high-flow systems. Featuring a counterweight-assisted closing mechanism and tilting disc guidance, it ensures quick, smooth, and reliable sealing response, effectively mitigating water hammer. Ideal for critical applications in power plants, petrochemical, water supply, and offshore platforms.

Key Features

Sizes DN50 to DN1000 (40”)

Counterweight & Tilting Disc Design-Fast closing, reliable seal, low resistance

Vertical & Horizontal Installation- Flexible mounting options

Body Materials: WCB, CF8/CF8M, Aluminum Bronze/Duplex Steel

Pressure Range: Class 150 to 2500LB

Temperature Range: -29°C to 425°C (material dependent)

Compliant Standards: API 594, API 6D, GB/T 13932

Operation & Advantages 

Under forward flow, the disc opens automatically with minimal resistance; upon flow stoppage or reversal, the counterweight-assisted closing and tilting disc movement ensure immediate shutoff to prevent backflow.
The tilting disc guide reduces impact during closure, extending valve service life.
Robust body construction reliably withstands high pressure, high temperature, and particulate-laden media.

Typical Applications

Suitable for feedwater systems in thermal power plants, petrochemical circulation pipelines, seawater cooling systems, shipboard piping, municipal water supply, and natural gas transmission.

Quality Control & Service

All body materials comply with ASTM or AISI standards, with material certificates provided.
Each valve undergoes rigorous shell pressure tests and seat tightness tests.
Comprehensive after-sales support and professional technical consultation are available, with recommendations for the most suitable material and model based on specific service conditions.
Third-party inspection and certification as specified by the customer are supported.

FAQ

1. 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.
2. 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).

3. Q:Does “NSV” valves have supply to any value end user?

 A:Yes,,it just like PETROKIMIA GRESIK in Indonesia, BP Iraq,ESFAHAN MOBARAKEH STEEL In Iran etc.

4. Q: I want to be registered as your agency.?

A: Defined inspection and manager’s approval shall be required for being registered as the company’s agency. For specific application method, please consult with sales team. If you are registered as the company’s agency, “Agency Certificate” will be issued.