Pressure relief valve instructions, Disassembly – Viking Pump TSM151.2: LS-M 123/4123 User Manual

Page 13

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PRESSURE RELIEF VALVE
INSTRUCTIONS

FIGURE 13

SIZE LS

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

DISASSEMBLY

SECTION TSM 151.2

ISSUE B

PAGE 13 OF 14

FIGURE 14

SIZE Q, QS AND M

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 THE 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 13 and 14.


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 if necessary.

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