Watts 2300 User Manual download pdf (Page 2)

Installation and Maintenance Instructions

(Brackets refer to item number)

Principles of Operation

When the water supply is cut in, the valve is in wide open posi-

tion. Water flowing to the system creates a rising delivery pres-

sure which feeds back through the control ports to the underside

of diaphragm (8). As the pressure on diaphragm (8) approaches

a balance with the force exerted by adjusting spring (5), disc (20)

is throttled to a position where just enough water flows to main-

tain the set delivery pressure.

Installation

Carefully clear inlet piping system of foreign matter and mount

regulator with the flow arrow pointing in the direction of flow.

Preferred position for 2300 valves is in a horizontal line with

spring chamber up. When so mounted, the tendency of sedi-

ment to settle in the control ports is practically eliminated.

Provide a three-valve bypass to facilitate inspection of the reduc-

ing valve without interrupting service. Avoid damaging effects of

foreign matter in the flow by using a strainer ahead of the valve.

This valve should be installed where it is accessible with sufficient

clearance for cleaning, service or adjustment.

Operation

On starting up, proceed as follows:

1. Open the inlet stop valve gradually until the reducing valve

takes control as indicated by the delivery pressure gage.

2. Turn adjusting screw (1) clockwise to increase the delivery

pressure, counterclockwise to lower it.

CAUTION: Any time a reducing valve is adjusted, the use of a

pressure gauge is recommended to verify correct pressure set-

ting. Do not bottom out adjusting screw on spring chamber.

Troubleshooting

Inadequate flow or delivery pressure:

1. Check initial pressure to see if full intended line pressure is

applied at the valve inlet.

Reduced pressure builds up:

1. Foreign matter may be lodged between disc (20) and seat ring

(19). Remove blind flange (24) to inspect.

2. Diaphragm (8) may be ruptured. Remove spring chamber (4)

to inspect.

3. Sealing ring (16) may be damaged. See dismantling

instructions below to replace.

Erratic Operation

Complete dismantling is recommended.

1. Check for clogged control ports connecting body outlet with

diaphragm chamber.

2. Check for deposits causing sticking of sealing ring (16) or stem

(14) in their respective guides.

Dismantling

To change or inspect composition disc or sealing ring:

1. Remove blind flange (24).

2. Remove stem nuts (22). Keep stem from turning by inserting

screw driver in slot on end of stem.

3. Disc holder (21) will drop out. Carefully remove balance pis-

ton (18) so as not to damage sealing ring (16) as it is pulled

through seat ring (19).

To examine diaphragm or stem:

1. Remove compression from spring by turning adjusting

screw (1) counterclockwise.

2. Remove diaphragm bolts (9) and lift off spring chamber

(4).

3. Lift pressure plate (7) to withdraw diaphragm and stem

from valve.

4. To examine diaphragm, disassemble coupling nut (6) and

lift off pressure plate (7).

Valve Setting

Should the threaded connection between stem coupling

(11) and stem (14) be disturbed, proceed as follows:

1. Insert stem assembly (A) and hold disc on seat ring in

closed position, as shown.

2. Screw stem coupling (B) on stem until travel setting T is

reached.

3. Remove stem assembly (A) and lock setting by drilling

hole drilling hole and inserting dowel pin (C).

NOTE: Annual inspection of the rubber components

and control parts is recommended to ensure proper

operation.

Valve Size 3 4

Dimension T

⁄16

⁄64

DIMENSION ‘T’

1 2 3 4 5 6 7 ... 11 12

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Watts 2300 User Manual Page 2

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