Hale RSD - Manual (Page 25)

25 Section 2a: Accessories
Hale Products, Inc., Nov. 2005, Rev-A
Ac ce ss or ies
❑
Figure 2a-4: Rotary Vane and ESP Priming Pumps
An ESP priming pump also uses a single control to open the priming valve
between the pump and the priming pumps, and start the priming motor.
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 (SPVR), for Remote Mounting
A hose is connected from the SPVR to the priming port on the 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
2a-5: “SPVR Priming Valves,” on page 26.)
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. (See Figure 2a-6: “PVG Priming Valves,” on
page 26.)
When the handle on the PVG is pulled out, the valve opens and the
switch energizes the primer motor. Pushing the handle in de-energizes
the motor and closes the valve.