Applications
check valve is segined to prevent fluid from flowing back and ensure the flow to one way direction.
It can be used to reduce the loss of fluid back suction,avoid ingpipe-hammering.
It is used in the food-processing, beverages, winery, oil, cosmetics,
pharmaceutical and chemical industries.
Operating principle:
The valve opens when pressure of the fluid exceeds the spring pressure.While it is closed when the two pressures are close equal.And stronger counter-pressure also makes the valve close.
Design and features:
Available sizes:DN-40/1.5"to 200/8"
Easily disassemble.
compact construction.
Boby/shaft :AISI 316L/SS304
Spring: AISI 301
Seal: EPDM according to FDA177.2600
Surface finishing: Ra≤0.8μm
Seal:NBR, FPM (Viton) or PTFE. FDA 177.2600(optional) Connections: weld, thread, clamp, DIN, SMS, RJT, IDF, ISO,3A
Max. pressure :10 bar
Opening pressure:
0.2 bar (DN-32/40)
0.1 bar (DN-50/200)
Working temperature -10ºC to +120ºC (EPDM)
| Model: | 20109 |
| Material of valve: | AISI 304, AISI 316L |
| Standard of valve: | DIN/SMS/3A/ISO/IDF |
| Flux domination of pipeline: | DN25-150&1"-6", applied to the stainless steel pipeline system |
Donjoy built up in 1993, with registered capital RMB 55, 08 millions. We focus on developing high quality PID process controller, the valve positioner, the flow controller, the valve control unit, high purity process control valve, intelligent self-control valve, high pure pump, Cleaning technology, piping and pressure vessel safety technology, high pure tubing fitting and pipeline accessories. Donjoy's products and technoligy are widely used in biopharmaceutical, food, drink, wine and other industrial fields. Donjoy's innovation solutions meets growing demand in the industry of biopharmaceutical, food and beverage from the whold wold, special the emerging market.
Raw material, processing technology, welding technology, surface treatment from Donjoy have achieved advanced levels of domestic and foreign marekt. Donjoy producing according to ASME BPE, EHEDG, FDA and 3A standard, get certificate of PED-97/23/EC and MD-06/42/EC issued by TUV, 3A issued by 3A organization, TS licence and ISO9001: 2008.
Donjoy With advanced technology, excellent quality and perfect after-sales service system, has been assessed for the national high-tech enterprises, the Provincial Famous Trademark, the Trovincial Science and Ttechnology Enterprises, Innovative Enterprises, Patent Model Enterprises, R & D Center, AAA Credit Enterprises.
Donjoy has been committed to major technological advances, is your trusted business partners!
Technological innovation, rapid development of the market and customer needs are the greatest challenges facing us today.
Faced with these challenges we are confident, because of highly professional products and technological innovation, we will meet the growing demard of market and customer with our better and better products.
