Install Instructions
feet
(water)*
80.0
40.0
20.0
10.0
5.0
2.0
1.0
.5
Inches bar
(Water)
960 2.4
480 1.2
240 .6
120 .3
60 .15
24 .06
12 .03
6 .02
Pressure - Temperature Limits
Pattern Type of Solder Working Temp. Maximum Pressure
°F °C psi bar
95.5 200 93 300 20.7
(Tin-Antimony) 225 107 250 17.2
Solder-to-Solder 250 121 200 13.8
50-50 and 100 38 200 13.8
60-40 150 66 150 10.3
(Tin-Lead) 250 121 85 5.9
Thread-to-Thread — 250 121 300 20.7
Installation Instructions
Watts Flow Measurement/Balancing Valves are available in the straightway pattern with threaded or solder end connections.
All tapered pipe threads conform to FEDERAL SPECS H28. Valves conform to ANSI B16.18 and ANSI B16.22. Maximum
Pressure/Temperature Ratings: 300 psi (20.7 bar) - 250°F (121°C).
1. Install valve on return line of equipment to be balanced or as shown on the plans.
2. For maximum accuracy, the flow measurement valve should be located in an unrestricted straight pipe run so that no
fittings (elbow, valve, tee, etc.) is closer to the measurement valve than 5 pipe diameters upstream and 2 pipe diameter
downstream. If a balancing valve is located downstream from a circulation pump, allow a distance of ten (10) diameters
between the pump and balancing valves.
3. Series CSM-61M1 flow measurement valves are bi-directional and should be installed to ensure ease of hooking up
meter, adjusting setting, and enabling memory device. A
1
⁄8" (3mm) NPT plugged port is installed on each measurement
valve
1
⁄2" - 1" (15-25mm) and can be used as a drain port if needed.
4. Solder end valves are designed to be soft soldered into lines without disassembly, using a low temperature solder 400°F
(204°C). Other solders such as 95/5 tin antimony 460°F (238°C) can be used, however, extreme caution must be used to
prevent seat damage. Higher temperature solders will damage the seat material.
5. Remove indicator knob prior to soldering. Replace after soldering is completed.
6. Apply heat with flame directed away from the center of the valve body. Excessive heat can harm the seats.
7. Heat solder joints only to the point were solder will flow properly. Excessive heat may distort brass castings.
IS-CSM-61M1-S
Flow Measurement Instruction
1. Loosen memory screw.
2. Turn indicator knob to open position on indicator plate. Do not force past this point.
3. Connect, vent and prepare the differential gauge. Refer to instructions furnished with the gauge.
4. After initial pressure differential reading is taken, refer to flow rate charts to obtain flow rate based on pressure differential
and valve setting. If flow rate is in excess of that specified, turn indicator knob towards closed position, noting pressure
drop and valve setting and determining new flow rates from flow rate chart. Once correct flow rate settings has been
established, slide memory screw counter-clockwise towards closed side of indicator plate until memory stop ring hits
indicator plate. Do not force beyond this point. Tighten memory screw. Refer to Figures 1 and 2. The unit or system
has now been balanced and the memory set.
5. After memory is set, disconnect differential gauge.
Figure 2
Memory
Screw
Size Order Weight
Valve No. (In.) No. A B (lbs.)
CSM-61T-M1 1 0856740 3
1
⁄8
3
⁄4 1.75
CSM-61S-M1 1 0856739 3
7
⁄8
3
⁄4 1.87
Note: (T) = Threaded, (S) = Solder
Dimensions (Inches)
Valves conform to ANSI B16.18 and ANSI B16.22
1" Flow Chart
1
7
⁄8
1
7
⁄8
2
A
B
Dial Setting
Pressure Differential
Pressure Differential
.3 .5 1.0 2.0 3.0 5.0 10.0 20.0 gpm
1.1 1.9 3.8 7.6 11.4 19 38 76 lpm
* To convert to kg/m
2
multiply feet of water by 304.8
*To convert to psi multiply feet of water by .4335
FLOW
70 60 50 40
30
20
0
Series CSM-61M1
Flow Measurement/Balancing Valves
Sizes:
1
⁄2",
3
⁄4", 1" (15, 20, 25mm)
Figure 1
Memory
Screw
IS-CSM-61M1-S 0829 EDP# 1910821 © Watts, 2008
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
Water Safety & Flow Control Products
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.


