Pressure Relief Valve
- Pressure Relief Valve: Limits pipe line pressure by release excess pressure
- Pressure sustaining: Prevents pipe line pressure from rising to a maximum value
- Operates over a wide flow range
- Inlet pressure adjustment range: 65-180psi
- Can be maintained without removal from the pipe line
- Flanged to EN1092-2 PN10/PN16, ANSI B16.1 Class 150 FF (Other available on request)
- Grooved ends to AWWA C606 Standard
- Rated Working Pressure: 300 psi
- Adjustment Range of Set Pressure: 65 to 180 psi
- Fusion Bonded Epoxy Coated Interior and Exterior to AWWA C550 Standard.
Description
Attachment
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LIFECO pumps undergo the required inspection, tests and production control during the assembly process and records are kept for the same, before they are delivered to our customers. Each pump is produced, and subjected to performance tests as follows:
a) Test run
performance curves plotted showing efficiency, brake force (kW), and total head developed at shutdown, at rated capacity, at 150 percent of rated capacity, And at selected intermediate capacities between closing and maximum capacities exceeding 150% of the rated capacity.
b) Hydrostatic Test
Each pump shall be hydrostatically tested for a minimum of 5 minutes. The test pressure shall be up to two times
the maximum working pressure of the pump, but in no case less than 250 psi (1724 kPa) to ensure that there is no
rupture or leakage through the castings at the test pressure.
c) Motor Balance
The impellers of each pump are dynamically balanced with a balance quality grade of G6.3 accordingly
with the requirements for the pumps impellers in the Mechanical Vibration Standard – Balance Quality
