Viking Pump TSM151.1: H-LL 123/4123 - Manual (Page 12)

SECTION TSM 151.1 ISSUE C PAGE 12 OF 13
PRESSURE RELIEF VALVE
INSTRUCTIONS
DISASSEMBLY
DANGER
BEFORE OPENING ANY VIKING PUMP LIQUID
CHAMBER (PUMPING CHAMBER, RESERVOIR,
RELIEF VALVE ADJUSTING CAP FITTING ETC.)
BE SURE:
1. THAT ANY PRESSURE IN CHAMBER HAS
BEEN COMPLETELY VENTED THROUGH
SUCTION OR DISCHARGE LINES OR OTHER
APPROPRIATE OPENINGS OR
CONNECTIONS.
2. THAT THE DRIVING MEANS (MOTOR,
TURBINE, ENGINE, ETC.) HAS BEEN
“LOCKED OUT” OR MADE NON-
OPERATIONAL SO THAT IT CANNOT BE
STARTED WHILE WORK IS BEING DONE ON
PUMP.
3. THAT YOU KNOW WHAT LIQUID THE PUMP
HAS BEEN HANDLING AND THE
PRECAUTIONS NECESSARY TO SAFELY
HANDLE THE LIQUID. OBTAIN A MATERIAL
SAFETY DATA SHEET (MSDS) FOR THE
LIQUID TO BE SURE THESE PRECAUTIONS
ARE UNDERSTOOD.
FAILURE TO FOLLOW ABOVE LISTED
PRECAUTIONARY MEASURES MAY RESULT IN
SERIOUS INJURY OR DEATH.
Mark valve and head before disassembly to insure
proper reassembly.
1. Remove valve cap.
2. Measure and record length of extension of adjusting
screw. Refer to “A” on Figures 15 and 16.
3. Loosen locknut and back out adjusting screw until
spring pressure is released.
4. Remove bonnet, spring guide, spring and poppet
from valve body. Clean and inspect all parts for
wear or damage and replace as necessary.
LIST OF PARTS
1. Valve Cap 6. Valve Body
2. Adjusting Screw 7. Valve Spring
3. Lock Nut 8. Poppet
4. Spring Guide 9. Cap Gasket
5. Bonnet 10. Bonnet Gasket
FIGURE 16
SIZE K, KK, LQ AND LL
FIGURE 15
SIZE H AND HL