WRAS NSF 61 Combination Air Release Valve

Fire Fighting System Combination Air Valve SS304/SS316 Internal Parts

 Conbination Air Release Valve Fire Fighting For Clean Water​ Full Flow Area
 
 
Triple Function:
1. Large air release during filling of the pipeline
    2. Large air intake during draining of the pipeline
3. Small air release under pressurized pipeline
 
Features:
. Advanced design: Strong float and simple mechanism can prevent cracking during sudden water hammer& quick closure.
. No arms or levers that can prevent vibrating, bending, direct closure of the fl oat.
. Smooth cage outside of the float, keep float moving in specifi ed guide rail.
. Bottom rubber buffer for collision prevention, and drain easy with proper holes around the cage during vacuum.
. Outside screen is for safety and prevent insects in.
. Fully fusion epoxy coated inside and outside of valve body for long term services.
. Flange drilling and dimension comply with : BS EN 1092 and BS EN 558 and ANSI flange.
 
 
Size Selection Table:

 
Service Fields:
Size range:DN 25-300MM
Pressure ratings:1.0Mpa, 1.6Mpa(Thread)
For water system, fire fighting, irrigation system.
 
Technical Data:
1.0Mpa,1.6Mp,2.5 Mpa(Flange)
Working temperature: -10°-80°C.
Flow media: clean water

Material List:

KARS ( Thread Type DN25-DN50)

KARX ( Flange Type DN50-DN300)

Dimension:

KARS ( Thread Type DN25-DN50)

KARX ( Flange Type DN50-DN300)

Air Flow Characteristic

Large Air Exhausting

Air Intake

Small air venting