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Applications:
Check valve is a valve that prevents the fluid from flowing back and ensures to flow in only one direction.
It can be used to prevent the flow less from returning avoid pipe-hammering.
It is used in the food-processing, beverages, wine, oil, cosmestics, pharmaceutical and chemical industries.
Operating principle:
The valve opens when the pressure of the fluid exceeds the pressure to spring, when the two pressures are equalised, the valve closes. A stronger counter-pressure also  makes the valve close.
Design and features:
Easy disassemble
Small-size construction
DIN11851 connections(standard)
Specification
Sizes
DN25/1'' to DN100/4''
Max pressure:
10bar
Opening pressure
0.3bar(DN25)
 0.2ar(DN32/40)  0.1bar(DN50/100)
Working temperature
-10 degree c to 120 degree c(EPDM)
Connnections:
weld, thread, clamp, DIN, SMS ,RJT, Â IDF, ISO, 3A
Seals material
NBR, FPM(Viton) or PTFE, All of them according to FDA 177.2600
Application scope
food-processing, beverage, wine, oil, cosmetics, pharmaceutical and chemical industries
Packaging details
standard exporting package
Delivery details
usually within 20 days after receiving T/T down payment
Materials:
Casing / shaft AISI 316L/AISI304
Spring AISI 301
EPDM Seal according to FDA 177.2600
Surface finishing Ra≤0.8μm
Sanitary Ss 304 Welding Check Valve Nut Connection of Valve Body
Model NO.: NO. VZH200A01
Application: Industrial Usage, Water Industrial Usage, Household Usage
Size: Dn25-Dn100, 1′′-4′′
Connection: Weld, Thread
Trademark: DONJOY
Transport Package: Standard Exporting Package
Specification: CE, ROTHS, SGS
Origin: Wenzhou, Zhejiang, China
HS Code: 8481300000
1"-4" Ss 304 Welding Check Valve Nut Connection of Valve Body