A check valve,is a mechanical device, a valve, which normally allows fluid (liquid or gas) to flow through it in only one direction.

Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, and/or inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal.

     An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. Typically the check valve is designed for and can therefore be specified for a specific cracking pressure.

Heart valves are essentially inlet and outlet check valves for the heart ventricles, since the ventricles act as a pump.

Features:
1. Small in size, light in weight, compact in structure, easy in maintenance.
2. Two torsion springs are used excreting on each of the pair valve plates. Which close the plates quickly and automatically.
3. The quick-close action prevents the medium from flowing back and eliminates water-hammer effect.
4. This valve is short in length, so that it is rigid and easy to mount.
5. It is easy to install on pipeline which is laid horizontally or vertically.
6. This valve is tightly sealed without leakage under the pressure water test.
7. Safe and reliable in operation, high interference-resistance.
8. The connection dimensions of flanges accord with the standards of GB4216-84 GB4216.84
9. The face to face dimensions are in accordance with GB12221-89.ISO5752-82. The stem of the valve should be perpendicular to the horizontal level when the valve is mounted on horizontal pipeline. For vertical installation the direction of flow should be downward

We promise no leakage and breakage for valves. Every butterfly valve will test for 2 times test pressure before leave factory. We will replace the valve if there is quality problem within 24 months guarantee period.

2.We obtained ISO9001 quality system certification.We inspect the parts of valve carefully, 48 produce steps, try to supply you ideal valve.

3.We can supply different kinds of materials according to customers' requests,such as DI,cast steel,SS304,SS316 body and disc. EPDM,NBR,PTFE,Viton etc. Enough stock ensure fast delivery.

4.We have more than 150 types body moulds, which include ISO,DIN,ANSI,BS standard.

5.We own full-automatic machine paint line, match high-temperature baking house,which makes smooth paint and good appearance of valve.

6.Every Jinerjian valve has the one but only security label. Please browse http://www.8612315.com/.  months guarantee period. 

7.Design-cast-machining-assemble-sale-after sale service.Perfect production and service,efficient and professional sales team,what we sale is not products, but solution for you!

 We regards"high quality products and customer satisfaction"as belief,regards "reasonable price, attentive service and most reliable quality"as basic of company. We make the following commitments to you.

A, Quality commitment:

1,In order to prevent unqualified products leaving factory,company carried out 48 ways quality controlfrom casting to packing.Each butterfly valve meets national standard.

2, We put inspection certificates and installation instructions together with products to help the finally user use correctly.

B,Price commitment:

1, In order to make sure reliability and advanced quality of the products, we choose the best material from parts suppliers.

2.We will supply our favorable price to you in the same conditions of other companies without use inferior materials.

C, Pre-sale service commitment:

Product introduction, technical communication, non-standard product design, trouble-shooting.

D, Sale service commitment:

1, we willinform customer about the product name,quantity,packing and delivery time in advance by fax,SMS,email etc,keep in touch with clients,ensure the timely delivery.

2, For special or complex products, we will arrange technical personnel give training and guidance to the usersabout application of the products, troubleshooting, commissioning and maintenance.

E, After-sales service commitment:

1, There are 24 months warranty of our products from the date of original delivery, "three guarantees" service (return, replacement, warranty).

2, During using products,we will organize regular technology, quality inspection and service personnel, collect the feedbacks about product quality, use condition and improvement etc, so as to further improve the quality of products.

              3, About users' complaints, we will make a constant respond. As for the problem which need to handle at the scene, after-sales service will arrived in 24 hours, 48 hours for outside province. At the same time need the customers fill out the product quality feedback form, after-sales service assessment form, so as to improve the quality of products and services.

"19 years trials and hardships

19 years persevere

We always believe that

What we manufacture is not only valve

Butcreating a faith, a trust, a quality

Even creating the Jinerjin brand which will be used all over the world in future.