6 Inch Check Valve

Product Introduction

Product Description

6 inch check valve also called as 6 inch non return valve or dn150 check valve, prevent backflow in piping systems, these mechanisms ensure that the valve closes when the flow of fluid through the pipe is reversed. To ensure unobstructed flow, the check valve can automatically close when the pressure is reduced. They exist in many industries and are used in mining, gas and water.

Pipe size, pressure rating, working pressure, flow rate, and medium gravity and temperature are usually considered when purchasing a check valve.

Types of 6 inch check valve:

Swing Check Valves

Tilting Disk Check Valves

Wafer Check Valves

Disk Check Valves

Piston Check Valves

Ball Check Valves

Duo-Check Valves

Non-Slam Check Valves

Features

The check valve protects the mechanical components in the piping system as the reverse flow of the fluid ceases. A check valve prevents primary backflow in the event of a pipe rupture. The mechanism also reduces wasted energy consumption by preventing backflow to lower pressures. Check valves have excellent hydrodynamic properties. Lighter weight facilitates installation, transport and storage.

Application

1. Protects media from backflow contamination by gravity, back-siphoning or back pressure.

2. Protects sensitive equipment from damage or contamination due to reversal of water flow.

3. After shutting off water flow, keep water in the system or pipes to prevent drainage or facilitate restarts.

4. Prevents cross flow in systems with unequal line pressures.

5. Reduce the risk of valve fault backflow or leakage.

6. Keep complex systems functioning properly by ensuring one-way flow.

Industry Codes and Standards

Valve Design: BS 1868 / API 6D

Pressure Testing: BS 6755-I

Face To Face: ANSI B 16.10

Flange Drilling: ANSI B 16.5 / BS 10 Table / DIN / IS / JIS Std.

Butt Weld End: ANSI B 16.25

Face to Face: ANSI B 16.10

Socket Weld End: ANSI B 16.11

Screwed End: ANSI B 1.20.1(BSP/NPT)

What are the requirements for the selection of 6 inch check valve

1. The corresponding size of the check valve should be determined, and the valve supplier must provide the data of the selected size, so that the valve size when the valve is fully opened at a given flow rate can be found;

2. For high and medium pressure check valves below DN50mm, vertical lift check valves and straight-through lift check valves should be selected;

3. For low pressure check valves below DN50mm, butterfly check valves, vertical lift check valves and diaphragm check valves should be selected;

4. For high and medium pressure check valves with DN greater than 50mm and less than 600mm, swing check valves should be used;

5. For medium and low pressure check valves with DN greater than 200mm and less than 1200mm, non-wear spherical check valves should be selected;

6. For low-pressure check valves with DN greater than 50mm and less than 2000mm, butterfly check valves and diaphragm check valves should be selected;

7. For pipelines that require less or no water hammer when closed, slow-closing swing check valves and slow-closing butterfly check valves should be used.

Common Models

Wafer lift check valve: H71X, H71H;

Wafer butterfly double flap check valve: H76X, H76H;

Wafer disc check valve: H74H, H74I, H74M;

Silent check valve: H42H, H42W;

Micro-resistance slow-closing check valve: HH44H, HH46H, HH49H;

Rubber disc check valve: HC44X;

Muffler check valve: HC41H, HC41X, HC41T;

Lift check valve: H41H, H41W;

Swing check valve: H44H, H44W;

Slide ball check valve: HQ41X;

Welded check valve: H61Y, H62Y, H64Y.

Why choose us?

Kaifeng High & Middle Pressure Valves Co., Ltd. , is a professional industrial valve manufacturer, well experienced in R&D, production procedure and export business.We are specializing in butterfly valve, check valve, gate /Knife gate valve. we have professional pre-sale and after-sale technical support and perfect services.

Our products use advanced manufacturing technology, and strictly conform to API, DIN, BS, EN, ISO, JIS , GB and other international standards and customized products as well. Our products are widely used in various fields such as marine industry, shipbuilding, petrochemical, metallurgy, water treatment, fire fighting, water supply and drainage, etc. The company has won unanimous recognition and praise from customers with high quality and good reputation.

FAQ

Q: Can I have a sample order?

A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable.

Q:What are your main products?

A:We are a valve manufacturer with 17 years of professional experience. Our main products are electric valves, pneumatic valves, manual valves, ball valves, butterfly valves and so on. We are committed to providing the best quality service for our global customers

Q. Can I have a sample order for valve?

A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable.

Q. Do you have any MOQ limit for valve order?

A: Low MOQ, 1pc for sample checking is available