SECTION 7
HIGH PRESSURE WATER
p. 7-18
80078868
7.3.1 Discharge HP Check Valve
The HP discharge check valve can be serviced with the sealing head either
installed in or removed from its intensifier HP cylinder.
1. Remove the gland nut from the sealing head using a pair of wrenches.
2. When the gland nut is removed, the spring guide and spring will normally
stay in the gland nut. The poppet is removed by carefully dislodging it with
a screwdriver. The seat is removed with a magnet. Inspect the seat for
damage or cracking. A cracked seat should be replaced. The seat is
symmetrical, and can be installed with either face toward the poppet. Note
that a slight burr at the hole edge identifies the used side of the poppet
seat. When reinstalling the seat, apply a thin film of High Purity Goop to
both faces. Install the seat into the sealing head with the best surface facing
the check poppet.
Figure 7-10
Item Description
(1) Sealing Head (2) Poppet (3) Gland Nut
(4) Poppet Seat (5) Spring (6) Guide Pin
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