Watts CSM-61-T - Manual

Memory
Screw
Figure 1 Pressure - Temperature Limits
Pattern Type of Solder Working Temp. Maximum Pressure
°F °C psi bar
Solder-to-Solder 95.5 200 93 125 8.6
(Lead Free) (Tin-Antimony)
Thread-to-Thread — 250 121 300 20.7
Installation
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 fit-
tings (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 downsteam from
a circulation pump, allow a distance of ten (10) diameters
between the pump and balancing valves.
3. Series CSM-61M1 and LFCSM-61M1 flow measurement
valves are bidirectional and should be installed to insure ease
of hooking up meter, adjusting setting and enabling memory
device. A 1 ⁄
8
" (3 mm) NPT plugged port is installed on each
measurement valve 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. Apply heat with flame directed away from the center of the
valve body. Excessive heat can harm the seats.
6. Heat solder joints only to the point were solder will flow prop-
erly. Excessive heat may distort brass castings.
Flow Measurement Instruction
1. Loosen memory screw.
2. With wrench, turn indicator 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 towards closed position, noting pressure drop
and valve setting and determining new flow rates from flow
rate chart. Once correct flow rate setting has been estab-
lished, slide memory stop clockwise towards open side of
indicator plate until memory stop ring hits indicator plate. Do
not force beyond this point. Tighten memory screw. Refer to
Figure 1. The unit or system has now been balanced and the
memory set.
5. After memory is set, disconnect differential gauge.
Watts Series CSM-61(Threaded)
& LFCSM-61(Solder)
Flow Measurement/Balancing Valves
Sizes: 1 1 ⁄
4
", 1 1 ⁄
2
", 2", 2 1 ⁄
2
", and 3"
IS-CSM-61-L
WARNING !
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.
Use caution when soldering. Protect yourself and others.
FUMES AND GASES can be hazardous to your health. HEAT
RAYS (INFRARED RADIATION) from flame or hot metal can
injure eyes.
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: 300psi (20.7 bar) - 250°F
(121°C).
WARNING !