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Head Office: 5-10 Block B, NO 39, 158 Alley Huancheng West Road Southern Part Haishu District Ningbo China.
Fitting Factory Add: 329 National High Way Side, Zhangqi Town, Cixi, Ningbo, China.
Vaves Factory Add: Shamen Industrial Area, Yuhuan, Taizhou, Zhejiang, China.

2 In Threaded Brass Spring Check Valve

Model Number: W-7001
Type: Metal Check Valves
Application: General
Temperature of Media: Normal Temperature

Quick Details

Type: Metal Check Valves

Product name: 2 in bsp npt threaded brass spring loaded check valve

keywords: bsp check valve, 2 in brass spring check valve, 1 npt check valve, spring loaded brass check valves, threaded brass check valve

Model Number: W-7001

Application: General

Temperature of Media: Normal Temperature

Body BRASS: CW614N, CuZn39Pb3, CW617N, CuZn40Pb2, DZR….
Valve clack, Stem & Bonnet Brass
Spring SS
Gasket NBR
FF Thread Thread to ISO228/1, BSP, NPT, etc

Product Display

Item: Brass Spring Check Valve
Nominal Size: 1/2″ – 4″
Brass material: 57-3
Connection Type: Female BSP x Female BSP
Working Pressure: 25bar/362.5psi
Temp. Range: -20°C to+100°C
Product Weight: Depend on its size
Standards: BS6755&BS7438

Technical Features

Suitable for domestic water service, heating and Air-conditioning plants, compressed air systems. It can be installed in any position: vertical, horizontal, oblique

Nominal Pressure: max. 200WOG

Working Temperature: -20℃≤t≤150℃

Available: in all sizes from 1/2″ up to 2″

DN L (mm) B (mm)
15 48 16
20 55 20
25 59 24
32 64 35
40 72 40
50 75 50
NO. Component Material
1 Body Brass
2 Spring Stainless steel
3 Stem Brass
4 Gasket NBR
5 Cap Brass

Check valve is to rely on the flow of the media itself and automatically open and close the valve flap, used to prevent the media back to the valve, also known as wafer check valve, wafer check valve, counter flow valve, and back pressure valve. Check valve is an automatic valve, its main role is to prevent media backflow, to prevent the pump and drive motor reversal, and the release of container media.

Customer Feedback

Customers Feedback

bsp check valve, may also be used on lines supplying auxiliary systems where pressure may rise above system pressure. 2 in brass spring check valve can be mainly divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).

The purpose of this type of 1 npt check valve is to allow the medium to flow in only one direction and prevent flow in the opposite direction. Usually this kind of valve works automatically. Under the action of fluid pressure flowing in one direction, the valve flap opens; when the fluid flows in the opposite direction, the fluid pressure and the self-coincident valve flap of the valve flap act on the valve seat, thereby cutting off the flow.

Among them, the spring loaded brass check valves belongs to this type of valve, which includes swing check valve and lift check valve. Swing check valves have a hinge mechanism and a door-like disc that rests freely on the sloping seat surface. In order to ensure that the valve disc can reach the proper position of the valve seat surface every time, the valve disc is designed in the hinge mechanism, so that the valve disc has enough swing space and makes the valve disc truly and comprehensively contact the valve seat. The disc can be made entirely of metal, or inlaid with leather, rubber, or synthetic overlays, depending on the performance requirements. In the fully open condition of the swing check valve, the fluid pressure is almost unimpeded, so the pressure drop across the valve is relatively small. The disc of the lift check valve is located on the sealing surface of the valve seat on the valve body. Except that the valve disc can rise and fall freely, the rest of the valve is like a globe valve. The fluid pressure lifts the valve disc from the sealing surface of the valve seat, and the backflow of the medium causes the valve disc to fall back to the valve seat and cut off the flow. According to the conditions of use, the disc can be of all-metal structure, or it can be in the form of a rubber pad or rubber ring embedded on the disc holder. Like the globe valve, the passage of fluid through the lift check valve is also narrow, so the pressure drop through the lift  threaded brass check valve is larger than that of the swing check valve, and the flow of the swing check valve is limited rare

Our Factory

Ningbo Western fitting Co.,Ltd. specialized in manufacturer brass OEM valves, OEM fittings.

Our annual production output is more than 10,000 metric tons. Our company is very near Ningbo port, and our products have been exported to South and North America, Europe and Southeast Asia.


Our Customer & Certification


How to get free samples?

A: Please send your address, tel. number, post code and express account number to our mail box, plus the model No. you need with QTY, we will contact you to arrange it.

Can you do the design for us?

We have a professional team having rich experience in manufacturing. We could supply customized size, grade of material, and the coating. We also could supply the package according to your request.

What’s the delivery time?

A: We usually ship by DHL, FedEx and TNT. It usually takes 3-5 days to arrive. Airline and sea are shipping both available. For products in stock, we can ship it within 7 days after receiving your payment. For custom order, within 24 tons, production time is 20-35 days after confirmed every details.

How to proceed an order for valve?

Firstly let us know your requirements or application.

Secondly We quote according to your requirements or our suggestions.

Thirdly customer confirms the samples and places deposit for formal order.

Fourthly We arrange the production.

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