PULSAlarm LEAK DETECTION
The PULSAlarm Pressure leak detection reagent head assembly consists of a leak detection
reagent head, leak detection diaphragm, suction and discharge check valves, and optional
pressure switch and gauge. If your pump is equipped with this option, refer to Appendix I on
page 33 for further information.
A sealed system must be maintained at all times during pump operation, whether leak
detection is required or not.
2.2.2 Pump Head/Piston assembly
The pump head/piston assembly is installed on the eccentric box. This assembly contains
the hydraulic system consisting of the pump head, cylinder, piston assembly, and three
hydraulic valves:
PTP (Push-To-Purge)
HPV (Hydraulic Performance Valve)
HBV (Hydraulic Bypass Valve).
Figure 4
The PTP valve is situated at the top of the pump head and automatically removes gases from
the hydraulic system during normal operation. Momentary manual actuation of the external
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