Check valves

Automatically activated locking units opened by the pressure exerted by the working medium upon the valve plate.

 

Check valves stop check valves are automatically activated locking units. They are opened by the pressure exerted by the working medium upon the valve plate. As soon as the flow is interrupted or the flow direction is reversed, the valve locks automatically.The built-in damping device makes this type of valve especially suitable in cases where the power requirement varies significantly. installed on the pressure or suction side of compressors, or in pipes in which only one direction of flow is permitted. GEA check valves are maintenance-free. Any defects that occur in the functional performance of the valves can be repaired.

Technical Features

  • Available in steel or stainless steel
  • Selection of body material as per German DIN EN12284, AD2000 Series W
  • Working media: glycol-based cold brine refrigerant EN 378 p. 1, e. g. NH3, R22, R134a and blends with refrigerator oil, neutral, gas and liquid media, glycol-based cold brine
  • Mounting position: horizontal, and vertical for upward flow direction

 
 
  RV Check Valve RVZ Check Valve RVA Stop Check Valve RVAK Stop Check Valve
design straightway or angle type straightway or angle type straightway or angle type straightway or angle type
material steel or stainless steel steel or stainless steel steel or stainless steel steel or stainless steel
nominal size DN 6-150 DN 40 -350 DN 10-200 DN 10-150
nominal pressure level PS 25, PS 40, PS 63 PS 25, PS 40, PS 63 PS 25, PS 40, PS 63 PS 25, PS 40, PS 63
temperature range -60 °C to +150 °C -60 °C to +150 °C -60 °C to +150 °C -60 °C to +150 °C
connection butt welding ends DIN, ANSI 
flanged ends DIN, ANSI 
solder ends 
screwed ends
flanged connection as per standard butt welding ends DIN, ANSI  
flanged ends DIN, ANSI  
solder ends  
screwed ends  
butt welding ends DIN, ANSI  
flanged ends DIN, ANSI  
solder ends  
screwed ends
other   hot-gas connection  
linear bearing  
oil drain
cover extension
linear ball bearing
cover extension
linear ball bearing
 
 

Additional Info

GRADE Refrigeration LLC

GRADE Refrigeration offices are located in the United Arab Emirates, Egypt, Jordan, Kuwait, Pakistan, Qatar and in Saudi Arabia.

GRADE Grasso Adearest
Industrial Area No. 15
P.O. Box 69619 Sharjah
United Arab Emirates

Phone: +971 6 5343808
Fax: +971 6 5347679

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