Hale MBP Booster - Manual (Page 23)

❑ Introduction
22 Silencer Series Booster Pump, p/n: 029-0020-83-0
An ESP series priming pump also uses a single control to open the priming
valve between the booster and the priming pumps, and start the priming
motor. (See Figure 2-7: “Rotary Vane and ESP Priming Pumps,” on page
21.)
Priming Valves
Hale priming valves open when the priming pump is operated to allow the
air to escape from the pump.
Two priming valves are offered:
❑ Hale Semi-Automatic Priming Valve for Remote Mounting (SPVR)
Figure 2-8: SPVR Priming Valves
A hose is connected from the SPVR to the priming tap on the booster
pump body. A single push-button on the operator’s panel starts the
priming pump motor. When a vacuum is created, the SPVR opens.
(See Figure 2-8: “SPVR Priming Valves.”)
Releasing the push-button stops the priming pump and the SPVR
closes.
❑ The Hale PVG Priming Valve
The PVG is mounted on the pump operator’s panel. The PVG is a com-
bination valve and switch.
When the handle on the PVG is pulled out, the valve opens and the
switch energizes the primer motor. (See Figure 2-9: “PVG Priming
Valves,” on page 23.) Pushing the handle in de-energizes the motor and
closes the valve.