Assembly, Pressure relief valve instructions, Danger – Viking Pump TSM142.1: H-LL 225/4225 User Manual

Page 13

SECTION TSM 142.1

ISSUE

PAGE 13 OF 13

DANgER !

Before opening any Viking pump liquid

chamber (pumping chamber, reservoir,

relief valve adjusting cap fitting, etc.)

Be sure:
1. That any pressure in the chamber has

been completely vented through the

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.

Reverse procedures outlined under Disassembly. If valve

is removed for repairs, be sure to replace in same position.

Relief valve adjusting screw cap must always point towards

suction side of pump. If pump rotation is reversed, remove

relief valve and turn end for end.

Refer to figures 1, 2 and

3, page 1.

ASSEMBLY

fIgURE 17

VALVE - H and HL SIZES

fIgURE 19

VALVE - K, KK, L, LQ and LL SIZES

PRESSURE RELIEf VALVE

INSTRUCTIONS

VALVE - 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

LIST Of PARTS