Non Return Valve

Model: NRV-SS304

Type: Non-Return Valve (Check Valve)

Size: 1/2" BSP (FXF)

Material: SS304 Stainless Steel

Thread Standard: BSP (Female x Female)

Pressure Rating: Up to 6000 PSI

Temperature Rating: 20C to 180C

check valves are mechanical device allowing fluid to flow through it in one direction. These valves have two ports or two openings. From one opening the fluid enters while from the other the fluid leaves. These valves have many applications.

Check valve refers to the opening and closing member for the circular valve and by its own weight and media pressure to produce action to block the backflow of the medium of a valve. Belong to the automatic valve category, also known as check valve, check valve, backflow valve or isolation valve. The valve movement is divided into lift and swing type. Lifting check valve and globe valve structure is similar, only the lack of driven valve valve stem. The medium flows in from the inlet side (lower side) and out from the outlet side (upper side). When the inlet pressure is greater than the sum of the weight of the valve flap and its flow resistance, the valve is opened. Conversely, the valve closes when the medium flows backwards. Swing check valve has an oblique and can rotate around the axis of the valve flap, the working principle is similar to the lift check valve. Check valve is often used as the bottom valve of the pumping device, can stop the backflow of water. Check valve and shut-off valve used in combination, can play a role in the safety of isolation. The disadvantages are high resistance and poor sealing when closed.



Working Principle
Check valves can also be used to provide recharge to auxiliary systems in which the pressure may rise above the system pressure. Check valves can be mainly divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).



The function of this type of valve is to allow the medium to flow in one direction only, and to prevent the flow in the opposite direction. Usually this valve is automatic work, in one direction of flow of fluid pressure, the valve flap open; fluid flow in the opposite direction, by the fluid pressure and the self-weight of the valve flap combined flap act on the valve seat, thus cutting off the flow.



Among the check valve belongs to this type of valve, it includes swing check valve and lift check valve. Swing check valves have a hinge mechanism and a door-like flap that rests freely on the inclined seat surface. To ensure that the flap reaches the right position on the seat surface every time, the flap is designed in the hinge mechanism so that the flap has sufficient swing space and true, full contact with the seat.

The Non-Return Valves Types that we manufacture are innumerable. Our Clapper type non return valves manipulate the pressure conditions ensuring the liquid to flow in the right direction. We carefully design spring type non return valves keeping all the pressure levels in view. Depending upon the NRV Valves specification, we finely finished our products with extreme dimensional accuracy.

We choose premium quality raw material to produce flawless and rust free Stainless Steel Non Return Valves and Alloy Steel Non Return Valves. All of our metals are lent from honest and genuine vendors. Our Aluminium Non Return Valves and Brass Non Return Valves exhibit properties like corrosion resistance and durability. On the other hand, our Bronze Non Return Valves are employed in cooling systems, heating systems, and domestic water systems.

For further details about our products, please refer to our official website. Feel free to contact our work personnel in case of any queries. Have a glance at your desired product, and place the order right now!

Clapper type non return valve, Spring type non return Valve, Flanged End Non Return Valves, Butt weld End Non Return Valves Dealer & Wholesaler
ANSI/ASME B16.10 Non-Return Valves Specifications:
Size 15mm to 1000 mm
Pressure Rating ASA 125#, 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN40, PN64
End Connection Screwed to BSP, BSPT, NPT, Socket Weld, Butt Weld Ends, Flanged Ends, Ring Type Joints(RTJ)
Manufacturing Standard BS-1868, API 6D, BS 5153 (EN 12334) / IS 5312 Part 1 & 2
Material OF Construction CI, CS, SS, AS, LCB, WC6, WC9
Type Swing, Lift-Up

BRAND: "RING"
Bronze/brass swing check valves (thread-end)
cast iron/ductile iron/stainless steel/cast steel/forget steel swing-type check valves
Bronze/cast iron/ductile iron/stainless steel non-slam check valves

Silent Check Valve Non Return Check Valve
Diameter:DN50-DN600
Connection:Flange
Working pressure:1.0Mpa/1.6Mpa
Temperature:0-80
Used:Water system
Material
Body&Disc:Ductile Iron

BS5153 Rubber Disc Check Valve Non Return Check Valve
Diameter DN50-DN400
Connection Flange
Working pressure 1.0Mpa/1.6Mpa
Temperature 0-80
Used Water system
Material
Body Ductile Iron
Disc:Ductile Iron+EPDM

?specializing 
Our company is specializing in the production of various kinds of valves: plastic check valve , duckbill valve , umbrella valve, combination valve , medical check valve and etc .
?variety 
The company produces various kinds of valves , various types and different size valves ,
In order to meet your different needs. 
?quality controlled 
The company is considering ."quality first,  service first" for the purpose of quality control. 
Quality is guaranteed to ensure you have an assured purchase! 
?favorable price 
We will provide you favorable and reasonable price! the larger amount,  much more discount!

Product : Cast Iron Stop Cum Non Return Valve
Product Standard : BS:5152
Type of Pattern : Straight
Pressure / Class / Rating : PN 16
Body Material cum Standard : Cast Iron IBR 86 to 93 Gr.A
Description : Bolted Bonnet, Outside Screw & Yoke Type Rising Stem
Type of Seat : Renewable seat
Type of Disc : Renewable disc
Trim : SS AISI-410
Gland Packing : Expanded Pure Flexible Graphite
End Details : Flanges as per DIN 2533 RF (PN 16) Undrilled

Testing & Certification
Rating : PN 16
Body Test Pressure : 26Kg/cm g (Hyd.)
Seat Test Pressure : 16Kg/cm g (Hyd.)
Back Seat Test Pressure : 16Kg/cm g (Hyd.)
Working Pressure : Max BOP 13Kg/cm g at 220 C Steam

Test Certificate in Form lll-C as per IBR is furnished with every supply.
(APS Marines & Logistics)