Catalogue

8 WSHP-PRC025D-EN
Features and Benefits
(1) Bronze manual valve includes memory stop positive shut-off and dual P/T ports.
(1) Optional electronic isolation valve for variable water volume control.
(1) OptionalY-ball strainer with brass cap and stainless steel mesh screen (includes blow down
valve and hose connector).
Automatic Flow Control
1
Automatic (Self) Balancing Flow Control
For automatic balancing of a water-source heat pump, the Hays™ self-balancing hose kit provides
a constant flow rate over the pressure differential range of 2 to 80 psid
2
. As system pressures
Size
Cv
Value
Min-
Max
GPM* Qty Size
Cv
Value
Min-
Max
GPM* Qty Size
Cv
Value
Min-Max
GPM* Qty
1/2” 0.23 0.2-0.5 3/4” 0.55 0.4-1.2 1” 2.3 1.6-5.1
0.46 0.3-1.0 1.1 0.8-2.5 5.4 3.8-12.1
0.87 0.6-1.9 2.2 1.6-4.9 9.2 6.5-20.6
1.8 1.3-4.0 4.0 2.8-8.9 20 14.1-44.7
3.3 2.3-7.4 6.7 4.7-15
5.4 3.8-12.1
Size
Cv
Value
Min-Max
GPM* Qty Size
Cv
Value
Min-
Max
GPM* Qty Size
Cv
Value
Min-Max
GPM* Qty
1-1¼” 5.5 3.9-12.3 1-½” 14 9.9-31.3 2” 13 9.2-29.1
9.8 6.9-21.9 19 13.4-42.5 34 24.0-76.0
20 14.1-44.7 14 31.1-98.4 56 39.6-125.2
24 17.0-53.7
Flex Hose
Mesurmeter w/PT’s
Optional Yball Strainer
w/Blowdown Valve &
Hose Connector
PT
FLOW
Ball Valve
Optional Isolation Valve
2-Position Valve
ISOLATION
VALVE
UNIT
RETURN
SUPPLY
1
For the latest Hayes Fluid Controls specification, please view the latest specification here:
http://flowcontrolvalves.haysfluidcontrols.com/category/automatic-balancing-valves
2
At low differential pressure the flow area required to achieve higher flow can exceed the flow area available for the respective series.
Therefore, the minimum pressure differential requirement is increased for the higher flow ranges of each series Mesurflo valve.