Duplex Stainless Steel Check Valves

We are India's one of leading manufacturers, suppliers and exporters of Duplex stainless steel Check valves. We are known as most prominent source of DSS check valves in India. Duplex stainless steel Check valves are "automatic" valves that open with forward flow and close with reverse flow. In this type of valves, the pressure of the fluid passing through a system opens the valve, while any reversal of flow itself will close the valve. Exact operation will vary depending on the type of Check valve mechanism. Most common types of Duplex Steel Check valves are swing, lift (piston and ball), butterfly, stop and tilting-disk valves.

Duplex Stainless Steel Check valves are two-port but one way valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. We manufacture and supply various types of duplex steel check valves used in a wide variety of applications across industries. Although DSS check valves are available in a wide range of sizes and types, check valves generally are very small, simple, and/or comparitively inexpensive. Check valves work automatically and most are not needed to be controlled by a human or any external control; accordingly, most do not have any valve handle or stem.

DSS Check valves are used in many fluid systems such as those in chemical and power plants, and in many other industrial processes applications. Duplex steel Check valves are also often used when multiple gases or chemicals or fluids are mixed into one gas or chemical or fluid stream. In this kind of applications check valve is installed on each of the individual gas streams to prevent mixing of these gases.

Check valves may have flanged ends which are drilled according to pipeline compatible flange dimensional standards. Also can be Butt weld and Socket Weld connection.


Types of Duplex Stainless Steel Check valves

 

Duplex Stainless Steel Swing Check valve

 

Duplex Stainless Steel Swing Check valve

 

Duplex Stainless Steel Lift Check valve

Duplex Stainless Steel Lift Check valve

 

Duplex Stainless Steel Wafer Check Valves

 

Duplex Stainless Steel Wafer Check Valves

 

Duplex Stainless Steel Wafer Check Valves

Duplex Stainless Steel Wafer Check Valves

 

Duplex Stainless Steel Stop Check Valves

Duplex Stainless Steel Stop Check Valves

 

Duplex Stainless Steel API Pressure Sealing Check Valve

 

Duplex Stainless Steel API Pressure Sealing Check Valve

 

Duplex Stainless Steel Butt- Weld Wing Check Valve

Duplex Stainless Steel Butt- Weld Wwing Check Valve

 

Duplex Stainless Steel Float Ball Check Valve

Duplex Stainless Steel Float Ball Check Valve

 

Duplex Stainless Steel Vertical Lift Check Valve

Duplex Stainless Steel Vertical Lift Check Valve

 

Duplex Stainless Steel Flanged Nozzle Type Check Valves

Duplex Stainless Steel Flanged Nozzle Type Check Valves

 

Duplex Stainless Steel Check valves Grade Options

  • A8901A/A995 3A CD4MCu Duplex Stainless Steel Check valves
  • A890/A995 1B CD4MCuN Duplex Stainless Steel Check valves
  • A890/A995 2A CE8MN Duplex Stainless Steel Check valves
  • A890/A995 4A CD3MN Duplex Stainless Steel Check valves

 

Duplex Stainless Steel Check valves Design Standards and Specifications

As per API 6D or ISO 14313:1999

Duplex Stainless Steel Flanged Check valves Face to Face Standard

As per ASME B 16.10

Duplex Stainless Steel Check valves Testing Standards

API Standard 594 covers Flanged, Lug, Wafer and Butt-welding design Check Valves material, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements of check valves.

Duplex Stainless Steel Check valves Inspection Standard

As per API 598. The standard covers inspection, supplementary examination, and pressure test requirements for both resilient-seated and metal-to-metal seated check valves. Pertains to inspection by the purchaser and to any supplementary examinations the purchaser may require at the valve manufacturer's plant.

 

Duplex Stainless Steel Check valves Inspection Check Points

All our Duplex Stainless Steel Check valves are 100% carefully inspected through series of dedicate testing procedures, including:

  • Material verification of Duplex Stainless Steel Check valves
  • Dimension check such as tolerance, lobing, out-of-roundness.
  • Final Mechanical Properties of Duplex Stainless Steel Check valves.
  • Overall quality inspection (Includes eddy current (non-destructive) electric testing.)

 

Duplex Stainless Steel Check valves Seat Materials Options

  • Virgin PTFE
  • PEEK

 

Duplex Stainless Steel Check valves Applications

  • Desalination process Application
  • Marine Application
  • Seawater Application
  • Power plants
  • Oil and Gas Industries
  • Petroleum Refineries and Petrochemicals
  • Chemical Industries.
  • Marine and Ship Building Industries
  • Offshore Industries
  • Oil well industry

 

Duplex Stainless Steel Check valves Packagings

All finished Duplex Stainless Steel Check valves are packed to suit the special conditions for international deliveries and can also customized as per customer's specific requirements.

 

Duplex Stainless Steel Check valves Documents

Our Duplex Stainless Steel Check valves products are accompanied by certified material test report 3.1 as per DIN EN 10204 / ASTM A1016. Pre material certification can be provided upon request.

 
We can provide our quality Duplex Stainless Steel Check valves with any world know third party inspection Certifications as following to make ensure the best quality
Duplex Stainless Steel Check valves with Lloyds inspection and certification
Duplex Stainless Steel Check valves with SGS third party inspection and certifications
Duplex Stainless Steel Check valves with  BVQI third party inspection and certifications
.Duplex Stainless Steel Check valves with IRS third party inspection and certifications
Duplex Stainless Steel Check valves with ABS third party inspection service
Duplex Stainless Steel Check valves with KR third party inspection and certifications
Duplex Stainless Steel Check valves with DNV third party inspection and certifications
Lloyds
SGS
BVQI
IRS

ABS

KR
DNV

 

 
Our Quality Duplex Stainless Steel Check valves are manufactured with strict quality control system and that is why it is widely acceptable across all industrial sectors.
Duplex Steel  Check valves for Oil & Gas Industries
Oil & Gas
Industries
Duplex Steel  Check valves for Nuclear Industries
Nuclear Power
Projects
Duplex Steel  Check valves for  Nuclear Power  projects
Petroleum Refineries
Duplex Steel  Check valves for Hydro Power  projects
Hydro Power
Projects
Duplex Steel  Check valves for Offshore Industries
Chemical
Industries
Duplex Steel  Check valves for Pharmaceutical Industries
Pharmaceutical
Industries
Duplex Steel  Check valves for  Pipe Lines
Offshore Industries
Duplex Steel  Check valves for Marine  Industries
Process Industries
Duplex Steel  Check valves for Process Industries
Pipe Line Projects
 
Marine
Industries

 

Countries where Neev Valves can supply Duplex Steel Check Valves

 

Neev Valves Welcomes Distributors for Duplex Steel Check Valves

 

Note : Information provided on this web site about "Duplex Stainless Steel Check valves" is for general information purposes only and subject to alteration without notice, we do not accept responsibility for errors or for information which is found to be misleading. Suggestions for or descriptions of the end use or application of Duplex Stainless Steel Check valves or methods of working are for information only and the company accept no liability in respect thereof.
Before ordering Duplex Stainless Steel Check valves supplied or manufactured by us, customers should satisfy themselves of their suitability.