Badger Meter High Temperature Fluid Meter - Manual (Page 13)

OUT
HYDRAULIC
MOTOR
IN CONTROL
VALVE
TEE
PUMP RELIEF
TANK
Figure 7: Tee test
b . Open the Test Kit loading valve fully to read maximum pump flow at zero pressure .
c . Close the loading valve to increase pressure from zero pressure to rated or maximum pump pressure to determine
pump condition .
d . The pump flow at rated pressure can now be checked against the pump manufacturer’s specifications . A decrease
in flow from zero pressure to maximum pressure indicates the pump condition . A pump that delivers a constant low
flow at zero pressure and at maximum pressure suggests suction problems .
2 . Relief Valve Test
a . Put a control valve into a power output mode with the output flow blocked, such as a cylinder at the end of its stroke .
b . Close the Test Kit loading valve while viewing the pressure . Pressure will increase until the relief valve opens . Record
the pressure at this point . Repeat to check the relief valve adjustment .
Relief Valve in Separate Housing
1 . Install the Test Kit in a Tee Test configuration to the line connecting the pump and relief valve . Plug any extra outlets .
2 . Close the Test Kit loading valve and watch the pressure and flow .
a . Reconnect the control valve to the tee . Put a control valve into a power output mode with the output flow blocked,
such as a cylinder at the end of its stroke .
b . Close the Test Kit loading valve while watching the pressure . Pressure will increase until the relief valve opens . Record
the pressure at this point . Repeat to check the relief valve adjustment .
Relief Valves
Often relief valves will start to open before they reach their full pressure flow settings . This can be noted by comparing the
pressure and flow rate readings made in Step 3 under Tee Test . Any great decrease in flow rate from tests made in Step 3
under Tee Test indicates a faulty relief valve .
User Manual
Page 13 November 2013