The plastic check valve core is assembled from the bottom, core, spring, sealing ring and cover. The valve body material (white) is POM (polyoxymethylene), the spring material is 304, the sealing ring material is generally EPDM (ethylene propylene diene monomer), and some types of sealing ring are made of silicone material.
Yuhuan Kerui Plastic Parts Factory specializes in producing plastic check valve cores. With years of experience in the industry, it has introduced IS0900:2000 production management system. With strong technical force, advanced manufacturing technology and equipment, strict testing methods, professional focus. The production concept has been certified by ACS and WRAS, and passed the ROHS test of SGS certification body. Provide the best quality series of plastic check valve spools for domestic and foreign customers.
Our aim: reputation first, customer first. Integrity for survival, reputation for development. Dedicated to providing excellent services to our customers, Corey will work with you to create a brilliant future, welcome to cooperate.
Check valve spool:
It is made of high temperature resistant and environmentally friendly non-toxic silicone gasket. Widely used in tap water, food and beverage industry, etc., can be used with confidence. The valve cores are all made of environmentally friendly materials and have passed the certification of drinking water safety standards such as EU SGS, UK WRAS, French ACS.
1) Under static conditions (no flow), the check valve is normally closed because the spring pressure tightly lifts the spool seal to keep the check valve closed.
2)Under dynamic conditions (normal flow), when the water pressure exceeds the spring resistance. The core is retracted, allowing water to flow through the one-way valve.
3)In the case of reflux conditions (reverse flow), if the downstream pressure of the valve increases (back pressure condition) or the upstream pressure of the system of the valve decreases (re-siphon condition) to form a back pressure, the spool is closed to prevent backflow.
* Inquiry and consulting support.
* Sample testing support.
* View our Factory.
* Training how to instal the machine, training how to use the machine.
* Engineers available to service machinery overseas.
Packing & Delivery
When you need to buy the valve core, you need to measure the exact inner diameter of your pipe, not the nominal size of the pipe. Because 4 inch, 6 inch and 1 inch, PPR20, 25, 32, etc. all describe the outer diameter of a pipe. Good and bad, the difference is reflected in the thickness of the pipe, the thickness is different, resulting in different inner diameters.
If you purchase the valve core according to the nominal size of the pipe, it may cause the size to be inconsistent and cannot be installed. Please refer to the chart for the installation details. If you do not understand, please consult us.
Q1.How to request a manufacturing quote fromKORIE?
A.Simply call or send us email with your purchase request.Be sure to include all accessories in your request forquote.
Q2.What are your quality contorl procedures?
A.Our products are made of high temperature resistant, environmentally friendly, non-toxic silicone gaskets. Widely used in tap water, food and beverage industry, etc., can be used with confidence. The valve cores are all made of environmentally friendly materials and have passed the certification of drinking water safety standards such as EU SGS, UK WRAS, French ACS.
Q3.How are orders packed and shipped?
A.Our goods are generally packed in kraft paper boxes, and we will use trays if there are more goods.