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King Technology 72 Installation Operation & Maintenance

Direct-activated pressure relief/sustaining/back pressure valve installation/operation/maintenance manual

Fig.1

1. Installation

a) Confirm the valve is suitable for the system, such as media, function, pressure, etc.

b) Before installation, the pipe of the system must be cleaned, and no fragment or any

garbage is allowed in the pipe.

c) Before the inlet of the valve, a strainer is needed; this can make the valve work properly.

d) Two shutoff valves can be installed at the inlet and the outlet of the valve, which will

facilitate the maintenance of the valve. Upstream of the valve to be installed at more than

five times the diameter pressure gauge to read the line pressure.

e) Following the arrow direction when installing the valve, and the arrow direction must be

conform to the flow direction.

The valve can be installed horizontally or vertically, and the maintenance space must be

held.

g) A pressure gauge or a plug (connected with PT1/8" thread) can be installed in the port of

PT1/8" in Fig.1.

Installation/Operation/Maintenance

Direct-activated Pressure

Relief/Sustaining/Back Pressure Valve

Installation/Operation/Maintenance Manual

Adjusting Screw

Locking Nut

Flow

Size/Flow Direction

PT1/8"

Model: 72

Table of Contents

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Page 1 Model: 72 Installation/Operation/Maintenance Direct-activated Pressure Relief/Sustaining/Back Pressure Valve Installation/Operation/Maintenance Manual Fig.1 Adjusting Screw Locking Nut Flow Size/Flow Direction PT1/8” 1. Installation a) Confirm the valve is suitable for the system, such as media, function, pressure, etc. b) Before installation, the pipe of the system must be cleaned, and no fragment or any garbage is allowed in the pipe.
Page 2 Installation/Operation/Maintenance 2. Setting pressure After installing finished, the valve must be set, follow the step below. a) Close the valve upstream of the gate valve or ball valve. b) Turn the adjusting screw clockwise, compression the spring of the valve. c) The upstream gate valve or ball valve slightly open, put a small amount of fluid through the easy adjustment.
Page 3 Installation/Operation/Maintenance 4. Assembly of the Relief/Sustaining Pressure Valve Fig.3 Spring Seat Body Adjusting Screw Spring Locking Nut Diaphragm Packing Plate Piston Diaphragm Cover Stem Bottom Cover...