API602 Forged Lift NRV Check Valve For Water Drainage System

Forging Lift Check Valve,Non Return Valve

1. Full bore or reducing bore;

2. Lift check valve;

3. Ball check valve

4. Swing check valve

5. Builtin spring if requested;
6. Bolted connection, spiral gasket sealed bonnet, threaded connection,all-weld sealed bonnet, and threaded connection, pressure self-tightening bonnet;

Coosai forged steel check valve has three designs of bonnet. Firstly, bolted bonnet, with its body and bonnet bolted, spiral wound gasket (made of 304 embeddedwith flexible graphite) sealed. It can also be metal ring junction in case of user's specialrequest. Secondly, welded bonnet, with its body and bonnet threaded, all welded seal.It can also be all penetration welded in case of user's special request. Thirdly, pressure self-tightening bonnet, with its body and bonnet threaded, inside pressure self-sealingring sealed.
Forged steel check valve has three structure designs, namely lift check valve,ball check valve and swing check valve.

Applicable Standards

• Design Standard: API 6D, API 594, BS1868, API602
• Structure: Bolted Bonnet, Welded bonnet, Pressure seal, Double disc, Tilting disc,”Y” pattern,Non Slam design.
• Operation: Damper and counterweight(optional)
• Nominal Dimension: Casting Valve: 2”-48”, Forging Valve: 1/4"~2"
• Nominal Pressure: Class 150-2500
• Connection type: RF,RTJ,FF, SW, NPT, BW
• Material:DI, CS, SS, DSS,LTCS, Inconel ,Monel, Bronze,Aluminum Bronze

Company Introduction

Coosai a specialized valve manufacturer which has 30 years’ experience in the design and manufacturing of quality engineered valves.

Coosai has a sound organization structure, professional technical capacity, advanced manufacturing and testing equipment, rigorous quality control system and well trained service staff. There is a real technical proficiency at Coosai with an organization to produce and supply valves according to any specific requirements the customer may ask.

Coosai workshops cover an area of 12000 square meters. Total registered asset is RMB 80 million. Besides ISO9001:2008 quality management and QC system, Coosai has the capability in offering varied products by virtue of over 100 sets large scale CNC lathes, testing equipment and computerized control valve testing and calibration bench. Nondestructive testing equipment include PT,UT,MT and RT are available.

Coosai produces quality Ball Valve, Gate valve, Globe valve and Check Valve, Knife gate valve and Segment Ball Valve, Control valves and Butterfly Valves. Valve size from 1/2”—60”,pressure from 150LB-2500LB,temperature range from -196ºC to 610 ºC, connected with manual, pneumatic, electric, hydraulic operator etc.

Coosai valves are CE PED 97/23/EEC, API 6D-0749, API6A-1199,API607 (fire safe) and TS certified. Coosai is Tier One supplier for SINOPEC and CNPC.

Coosai is dedicated to offering the best configuration and satisfy client’s expectations and their eventual commitments.

We look forward to meeting all distinguished clients and industry experts and sincerely welcome all your valuable inquiries.