Catalogue

6 WSHP-PRC025D-EN
Features and Benefits
Manual Flow Control
Ball Valve Flow Control
Traditionally, the first choice in a balancing device on a water-source heat pump application is the
lowest first cost option. In water-source heat pump fluid flow balancing, this typically employs a
manual balancing (ball valve) device with hoses.This method utilizes pressure/temperature (P/T)
measurement ports on the ball valves at the entering and leaving side of the heat pump so that
pressures and temperatures can be measured within the water piping.A ball valve is then manually
throttled to change the amount of flow to the unit to reach the desired temperature or pressure
differential.
Advantages
• Low first cost
• Direct access to the water-loop through P/T port for future trouble shooting
• Temperature and pressure measurements can cross check balancing
• Better water temperature measurement than external sensors
Disadvantages
• Flow accuracy of ±25%
• Each unit must be balanced multiple times because of changing system conditions in balancing
other units
• Integral differential temperature balancing is less accurate than differential pressure balancing
• Pressure drop of hose and fittings must be accounted for in differential pressure measurements
Ball valve flow control hose kit is equipped with:
(2) Stainless Steel braided hoses with brass end fittings containing fiber washers.
(2) Bronze manual valves with brass ball with option P/T port on return side.
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