70 | Chapter 6: Lubrication
application
The Fulflo “V” Series valve (PRV) used on HSR compressors is .5", .75" or 1.0" female
national pipe thread (FNPT) and operates efficiently with compressor lubricating oil.
The PRV is made of a cast iron body with threaded FNPT inlet/outlet connections;
a hardened steel piston and an adjustable spring range of 30 Psi to 100 Psi (207 to
689 kpa) (see
H 301/302 pressure regulating valve
part number
NPT size and spring rating
4W-PS-1284
.75" FNPT, 30 - 100 Psi (207 to 689 kpa)
Table 18
PRV size, part number and spring rating and information
installation
The PRV can be mounted in any position upstream of the oil cooler and filter. The
PRV relieves excess oil volume prior to filtration and bypasses oil to maintain
constant oil pressure. To minimize oil aeration, the PRV's outlet line is piped back to
the compressor frame sump below its minimum oil level.
Setting the Value
H O T O I L
DO NOT TOUCH.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145 (f) (6)
GE sets the initial PRV during its factory test run. The PRV utilizes a manually
adjusted, spring-loaded piston to control oil pressure throughout the compressor’s
operating speed range. Since higher oil pressures occur during cold startups,
adjust the oil supply pressure during normal (hot) operation. An adjustment to the
PRV’s spring-loaded piston regulates oil flow to the frame bearings by means of
observed oil pressure.
The
Pre-startup checklist
recommends field adjustment of PRV (if required) during
startup and normal compressor operations to maintain the compressor’s oil
supply pressure within GE specifications. PRVs are not a positive shut-off valve, and
bypass a minimal amount of oil all the time.
To increase system pressure:
Turn the adjustment screw clockwise.
To decrease system pressure:
Turn the adjustment screw counter clockwise.
Reset the adjustment screw locknut to hold the pressure setting.
Summary of Contents for H301 Series
Page 1: ...High speed reciprocating compressors H301 and 302 series operating manual GE Oil Gas ...
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Page 17: ...H301 302 HSR Compressors Rev 2 2 7 ...
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Page 114: ...104 Chapter 8 Maintenance Figure 21 Effective rod extension amount pocket is open ...
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