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X58C

2.

X46A

4.

INLET

OUTLET

4

1

3

2

*SUGGESTED REPAIR PARTS

IOM-ZW109FP

ZW109FP UL SCHEMATIC

CRD 

COVER

PIPE PLUG

COVER BEARING

SPRING

STEM NUT

DIAPHRAGM WASHER

DISC RETAINER

BODY

*

SPACER WASHERS

DISC GUIDE

SEAT

PIPE PLUG

STEM

SEAT O-RING

STUD

8" and Larger

*

DIAPHRAGM

*

DISC

*

Repair Parts

Seat Screw

8" and Larger

(Globe 

or 

Angle)

PIPE PLUG

HEX  NUT

8" and Larger

Cover Bolt

6" and Smaller

BASIC COMPONENTS
1  100-01 Hytrol (Main Valve)
2  X58C Restriction Fitting
3  CRD Pressure Reducing Control
4  X46A Flow Clean Strainer

HYTROL MAIN VALVE

inlet

Cover vent

(3/8" NPT)

Cap

Adjusting Screw

Jam Nut

Cover

Spring

Hex Nut

Belleville Washer

Diaphragm Washer

Diaphragm*

Yoke

Body and Seat Assy

Disc Retainer Assy

Gasket*

Plug, Body

*Machine Screw
 (Fil.Hd) 8 Req’d

Spring Guide

Pressure Setting
Adjusting Screw
(Turn Clockwise to 
Increase Setting)

3.

X58C 

Tube Connector

(NPT)

Restriction
Plug

Orifice

2.

1.

Minimum Flow Required When Setting Pressure

Valve Size (inch)

1 1/2
2
2 1/2
3
4
6
8
10

16
26
37
57
100
220
390
620

Min. Flow (GPM)

1747 Commerce Way, Paso Robles, CA 93446 Phone: 805/238-7100 Fax: 805/238-5766

WILKINS OPERATION OF ZURN PLUMBING PRODUCTS

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