MKS HPS Two-Stage Manual De Servicio página 20

Chapter Two: Servicing an HPS Products Two-Stage Valve
Internal rebuild bypass assembly kits are available. A new kit easily slides into the cleaned valve
body.
The bypass valve internal assembly can be disassembled further if necessary.
4-The nosepiece O-ring can be replaced by following the procedure for replacing the main valve
nosepiece.
Figure 2 – Exploded View of Bypass Valve
Disassembly and Inspection of the Bypass Valve
Disassembly and
Inspection of the Bypass
Valve
1-To further disassemble the
bypass internal, unscrew the
piston
assembly.
2-Inspect the piston U-cup for
excessive wear.
3-Inspect the bellows assembly
and stem guide for damage.
16
from the bellows