Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information
can result in death, serious personal injury, property
damage, or damage to the equipment.
Keep this Manual for future reference.
!
WARNING
Local building or plumbing codes may require modifications to the information provided. You are required to
consult the local building and plumbing codes prior
to installation. If the information provided here is not
consistent with local building or plumbing codes, the
local codes should be followed. This product must be
installed by a licensed contractor in accordance with
local codes and ordinances.
!
WARNING
Need for Periodic Inspection/Maintenance: This product
must be tested periodically in compliance with local codes,
but at least once per year or more as service conditions
warrant. All products must be retested once maintenance
has been performed. Corrosive water conditions and/or
unauthorized adjustments or repair could render the product
ineffective for the service intended. Regular checking and
cleaning of the product’s internal components helps assure
maximum life and proper product function.
IS-2300
Series 2300
Installation Instructions:
The 2300 Direct Operated Reducing Valve is designed for deadend water service where the flow is intermittent and changes
rapidly, as on domestic water systems. It is especially effective
in regulating the flow of water to such fast acting equipment as
flushometers and snap cocks. The design is self contained, no
control pipe is required.
The preferred position for the 2300 is in a horizontal line with the
spring chamber up. When so mounted, the tendency of sediment to settle in the control ports is practically eliminated.
FACE TO FACE OTHER DIMENSIONS APPROX. WEIGHT
E
SIZE ANSI ANSI ANSI A B C ANSI ANSI ANSI
IN. MM NPT 125 250 NPT 125 250
3 80 — 10 10
4 100 — 11
7
⁄8 121⁄2 65⁄8 265⁄8 111⁄4198 225
3
⁄4 6 213⁄4 9 — 108 128
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 position. Water flowing to the system creates a rising delivery pressure 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 maintain 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 sediment to settle in the control ports is practically eliminated.
Provide a three-valve bypass to facilitate inspection of the reducing 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 setting. Do not bottom out adjusting screw on spring chamber.
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.
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 piston (18) so as not to damage sealing ring (16) as it is pulled
through seat ring (19).
Valve Size 3 4
Dimension T
3
⁄16 17⁄64
DIMENSION ‘T’
▼
▼
Serial Number Plate
C
E
▼
▼
Item
▼
No. Part Name Remarks Material
1 Adjusting Screw Steel
2 Adjusting Screw Locknut Steel
3 Spring Button Cast Iron
4 Spring Chamber Cast Iron
5 Adjusting Spring (10-40 psi) Steel
Adjusting Spring (30-80 psi) Steel
6 Coupling Nut Note 2 Steel
7 Pressure Plate Note 2 Cast Iron
8 Diaphragm Note 1,2 Hycar
9 Diaphragm Bolts Steel
10 Base Cast Iron
27 Range Tag (10-40 psi) Aluminum
Range Tag (30-80 psi) Aluminum
NOTES:
1 Recommended Spare Part
2 These parts furnished in Repair
Standard Parts
When ordering parts, it is essential that the valve type, size, service and serial
number be stated.
Select part by item number, but order by part number.
Specify complete part number when ordering.
Part No. By Valve Size
Part3" 4"
Adjusting Screw 05-04867-00 05-04869-00
Adjusting Screw Locknut 05-02945-00 05-02946-00
Spring Button 05-01046-00 05-01047-00
Spring Chamber 04-01414-00 04-01417-00
Adjusting Spring (10-40 psi)
Adjusting Spring (30-80 psi)
Coupling Nut 05-03019-00 05-03020-00
Pressure Plate 04-03647-00 04-03649-00
Diaphragm 05-01612-00 05-01614-00
Diaphragm Bolts 05-04777-00 05-04782-00
Base 04-00459-00 04-00461-00
Stem Coupling 04-09487-00 04-01496-01
Diaphragm Nut 05-02875-00 05-02877-00
Dowel Pin 05-03865-00 05-03867-00
Stem 04-05343-00 04-05346-00
Body - ANSI NPT Scr – –
Body - ANSI 125 Fig 04-00918-00 04-00920-00
Body - ANSI 250 Fig 04-00928-01 04-00930-00
Sealing Ring 05-04038-00 05-04045-00
Guide Ring 04-04407-00 04-04411-01
Balanced Piston 04-09481-00 –
Balanced Piston Assembly – 22445
Seat Ring 04-04177-01 04-04180-02
Composition Disc 05-01719-00 05-01721-00
Composition Disc Holder 04-09493-00 04-09494-00
Stem Nut 05-03017-00 05-03018-00
Blind Flange Gasket 05-02367-00 05-02369-00
Blind Flange 04-02183-00 04-02186-00
Blind Flange Nut 05-02862-00 05-02860-00
Blind Flange Studs 04-05448-00 04-10119-00
Range Tag (10-40 psi) 05-06221-00 05-06221-00
Range Tag (30-80 psi) 05-06222-00 05-06222-00
Repair Kits
05-05115-01 05-05155-00
05-05148-00 05-05150-00
Part 3" 4"
Repair Kit 33167 33168
WARNING: This product contains chemicals known
to the State of California to cause cancer and birth
defects or other reproductive harm.
For more information: www.watts.com/prop65
Limited Warranty: Watts Regulator Co. (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of
original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER
WARRANTIES, EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special
or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting
from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no
control. This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.
Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above
limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to
determine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.