Parker PR12S8 Serie Instrucciones De Instalación Y Funcionamiento

 Eye protection (goggles) should be worn when installing the Pressure Releasing Tool (PRT).
 The Packing Adjuster must be tightened to ensure leakage will not occur through the Stem Packing.
 The Stinger Stem and Fitting Face must be clean.
 High pressure discharge of grease or product will result when using this tool.
 Always stand clear of the discharge hose or piping connected to the 1/2" Vent Port.
Installation
1. Verify that the O-ring is in place to seal against the fitting face.
2. Before installing the PRT, retract the Stinger until it is inside the Body. (See Figure 1.)
3. Install the PRT onto the lube fitting by hand. Turn clockwise until it is tight against the top of the fitting.
NOTE: Full thread engagement onto the lube fitting is required for safe installation.
Operation
Turn the Stinger Handle clockwise until the Stinger contacts the Ball. (See Figure 2.)
To Vent: With the Vent Valve open and the Manifold Valve open, turn the Stinger Handle clockwise to force the Fitting Ball off
its Seat. To achieve full venting, turn the Stinger Handle one (1) full turn. (See Figure 3.)
When all pressure has been vented, turn the Stinger Handle counter-clockwise to reseat the Ball.
To Read Pressure: With the Vent Valve closed and the Manifold Valve open, turn the Stinger Handle clockwise to force the
Fitting Ball off its Seat. Read the Pressure Gauge (not included). To reseat the Ball, turn the Stinger
handle counter-clockwise, then open the Vent Valve to release the pressure.
Removal
1. To remove the PRT, retract the Stinger until out of contact with the Ball.
2. Open the Manifold Valve and the Vent Valve to ensure all pressure has been vented.
3. Remove the PRT from the lube fitting, turning counter-clockwise.
Stinger Handle
Packing
Stem
Seal
O-ring
Typical
Lube Fitting
PRT installed with
Stem Seal seated
While this information is presented in good faith and believed to be accurate, Individuals using this literature must exercise their independent judgment in evaluating product selection and determining
product appropriateness for their particular purpose, system requirements and certifications. The manufacturer reserves the right to change product designs and specifications without notice.
IOM-PR12, Rev. 04
16101 Vallen Drive • Houston, Texas 77041 • 713.466.0056 • 800.231.0233 • www.parker.com/pgi
Packing Adjuster
Jam Nut
Packing Follower
1/2"NPT
1"-14 UNS
Ball
Seat
Stinger retracted.
PRT installed with Ball Check closed.
PGI Division - Parker Hannifin Corporation
I
NSTALLATION
I
NSTRUCTIONS FOR
R
ELEASING
WARNING!
PRT installed with
Ball Check closed.
Retracted
FIGURE 1
& O
PERATION
P
RESSURE
T
(PR12S8-XX)
OOL
FIGURE 2
PRT installed with
Stinger in Vent position.
FIGURE 3
GEARS 47591