Product Overview
Check Valve is manufactured by Junyue for grooved piping systems, fire protection networks, and industrial fluid handling. Constructed from ductile iron conforming to ASTM A536, rated for a maximum working pressure of 300 PSI, and available with UL and FM approvals.
Technical Specifications
Engineering data
A check valve is a valve whose opening and closing parts are circular discs and which rely on their own weight and medium pressure to produce an action to block the backflow of the medium. It belongs to the category of automatic valves, also known as non-return valves, one-way valves, reflux valves or isolation valves. It is mainly used in pipelines where the medium flows in one direction, and only allows the medium to flow in one direction to prevent the backflow of the medium.
The assembly, commissioning and testing of the valves are strictly controlled during assembly and commissioning, and strive for excellence to ensure the successful assembly and commissioning of the valves, and various performance tests are carried out, and all indicators meet the requirements. A quality plan is prepared for the valve process inspection to ensure that the valve is quality controlled from raw materials, blanks, machining, factory tests and various tests. The function of this type of valve is to allow the medium to flow in one direction only and prevent it from flowing in the opposite direction. Usually this type of valve works automatically. Under the pressure of the fluid flowing in one direction, the disc opens; when the fluid flows in the opposite direction, the fluid pressure and the self-reclosing disc of the disc act on the valve seat, thereby cutting off the flow.
Check valves are suitable for water supply systems, chemical industry, metallurgy and other industrial sectors, and are also suitable for domestic water pipe networks, but are not suitable for sewage with a lot of sediment.
Performance Characteristics
- Short structure length, small size and light weight.
- The valve disc closes quickly and the water hammer pressure is small.
- It can be used in horizontal or vertical pipelines and is easy to install.
- The flow channel is unobstructed, the fluid resistance is small, the action is sensitive, and the sealing performance is good.
- The valve disc has a short stroke and the valve closing impact force is small.
- The overall structure is simple and compact, the shape is beautiful, the service life is long, and the reliability is high.
All Products： https://www.sdjunyue.cc/products/grooved-butterfly-valve-with-lever.html
Compatibility
Drop-in replacement
This Junyue grooved piping component is engineered for seamless compatibility with Victaulic Style 07 and Grinnell system layouts. Verify pipe OD, groove profile, gasket compound, pressure class, and project approvals before specifying as a replacement.
Technical FAQ
Application limits
- Can it be used for steam above 150 C?
- No. Do not use for steam above 150 C unless a written project-specific approval, rated gasket, and compatible body material are confirmed.
- Can it replace any grooved fitting without checking pipe OD?
- No. Pipe OD, groove standard, working pressure, gasket material, and certification scope must be matched.
- Is it suitable for potable water by default?
- No. Potable water use requires confirmation of coating, gasket compound, local sanitary approval, and project compliance.
- Can it be used in corrosive chemical service?
- Not by default. Chemical compatibility must be verified against the medium, concentration, temperature, and coating system.
Order & Delivery
Shipping and lead time
- Factory: Weifang, Shandong, China
- Port: Qingdao Port, approx. 2 hours
- Lead Time: FCL 15-20 days
- Certificate: EN 10204 3.1 mill test certificate available
Certifications
Quality & compliance
Junyue products are manufactured under ISO 9001, ISO 14001, and ISO 45001 management systems, with UL listings and CE marking for international markets.
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