Quick pressure release valves 1.5" to 8"

ARI
5C-R-20-0-02-NT-PR
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    Delivery time:5-7 W Days
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1.5" to 8" R-20 QR3W Ooval by Aquestia.
Quick Reacting Pressure Relief Valve
The valve opens instantly to high pressure readings, but closes slowly to protect the system against excessive pressure. Compatible with dorot 100 series and bermad 100 series.

Quick Reacting Pressure Relief Valve
R-20 QR3W Ooval by Aquestia. Quick Reacting Pressure Relief Valve, The valve opens instantly to high pressure readings, but closes slowly to protect the system against excessive pressure. 1.5" - 8" models 
Maintains a constant downstream pressure regardless of upstream pressure or flow rate fluctuations. The set point of reduced pressure is adjustable by a 2-way or 3-way plastic pilot valve. 
A spring-loaded diaphragm inside the pilot reacts according to the downstream pressure changes. The pressure fluctuations are compensated by gradual opening and closing of the valve.
Includes Plastic Tubing & Fittings and 3 way valve. Working Pressure Range: 0.4 - 10 Bar [6 - 150 PSI]
Flow Rate Range: 5 - 220 m3/h [22 - 970 gpm]
KV 40 - 607
 Valve Size  Max. flow rate
1 1/2'' 24 m3/h [63 gpm]
2'' 24 m3/h [112 gpm]
2''S 63 m3/h [252 gpm]
2 1/2 '' 63 m3/h [175 gpm]
3'' 63 m3/h [252 gpm]
3''S 98 m3/h [448 gpm]
4'' 98 m3/h [448 gpm]
6'' 220 m3/h [1005 gpm]
8'' 394 m3/h [1790 gpm]

1.5" to 8" Quick Reacting Pressure Relief Valves.
AGRICULTURE, Landscape and Industrial Basic Hydraulic valve series R-20 come s  with a 3 way manual control valve.
The R-20 PR/PR3W series is a line of composite material, diaphragm operated
hydraulic control valves with a working pressure up
to 10 bar. [150 PSI]
The valves are suitable for installation on water transmission,
landscape and irrigation systems.
The R-20 series has an innovative elliptic shaped diaphragm
that integrates well with a wide variety of regulating control
pilots, solenoids and control accessories.
Unique in the R-20 Series
Available in sizes up to 8”
Separate double chamber for 6”-8” valves.