Bell & Gossett V1000461 Snap Zone Valve – ½” to 1” - Manual (Page 2)

Installation
Installation precautions
CAUTION:
• The valve can be damaged if improper sweating (soldering) is
used with the union connection. Before sweating the union
connection to the valve, remove the union nut and O-ring
from the valve body, then sweat the union tailpiece with
union nut into place.
• Make sure that all connecting pipe work is water tight.
• The use of petroleum based lubricants on valve o-rings will
cause swelling and failure of o-rings. This can cause leakage.
Pipe hanging installations
Be aware of water weight in the valve and connected piping when installing
your system.
NOTICE:
Never use the valve as a form of piping support. Support the valves and
piping according to the local building code. Failure to follow these
instructions may result in property damage.
Install the valve
The snap zone valve can be installed horizontally or vertically. Observe the
following precautions:
• When the valve is installed in a vertical position, the electrical
connections must be at the top of the actuator.
• On chilled water applications, the actuator should be above the pipe
centerline.
• Do not install the valve in a dusty area.
1. Install the valve in line via the NPT or sweat union connections.
2. Lubricate the enclosed O-rings with silicone oil or grease before
installation.
3. Insert the O-rings in the grooves that are provided on the mounting
face of each side of the valve.
4. Slide the union nuts over the pipe with the open threaded end of the
nut facing the valve.
5. Thread or sweat the tail pieces for the valve to the adjacent piping.
6. Tighten union nuts to complete valve assembly to line.
Install NPT connection
1. Apply pipe compound conservatively to male connecting fittings only.
NOTICE:
Do not overtighten when using PTFE impregnated pipe compound
and PTFE tape on pipe threads. Doing so may damage the
valve body.
2. Check connections for leaks.
Install sweat connection
CAUTION:
• Heat associated with the use of silver solder may damage
valve components and void the product warranty. Do not use
silver solder.
• Excessive use of solder or flux may result in damage to the
internal valve components. Do not use excessive solder or
flux.
1. Clean tube ends and valve connections thoroughly with a fine grade
emery cloth or fine grit sandpaper.
2. Adjust the valve to the full open position.
3. Wrap the valve in a cool wet rag.
4. Direct the flame being careful to avoid subjecting the valve to
excessive heat.
5. Allow the valve to cool before touching or operating.
6. Check the soldered connection for leaks.
Install the actuator
NOTICE:
To install an actuator on a valve already in line, close the shutoff valves
(upstream first, then downstream) in the piping or turn off the pump. This
procedure allows the differential pressure in the valve to drop.
1. Make sure that the union connections between the valve and piping
are securely fastened.
2. Thread the actuator adapter onto the valve body.
3. Press the actuator onto the valve and adapter until it snaps into place.
When assembled, the actuator can be rotated 360º to aid in positioning
of the terminal wires.
Operational limits
Valve
Maximum Limitations
Temperature ºF (ºC) Max. working pres-
sure PSI (kPa)
Snap Zone
NPT 32ºF (0ºC) to 212ºF
(100ºC) — Fluid
32ºF (0ºC) to 122ºF
(50ºC) — Ambient
240 PSI (1655 kPa)
Sweat 125 PSI (861 kPa) 1
Parameter Value
Operation Normally closed
Voltage 24 V AC/DC +20% / 10%, 0–60
Hz
Maximum inrush current 250 mA during 2 min. max.
Operating Current 75 mA
Operating Power 1.8 W
Closing and opening times Approximately 3 minutes
Actuator stroke 4 mm
Switching point Approximately 2 mm
Enclosure rating IP 54
Maximum differential shutoff pres-
sure
60 PSI
Performance Characteristics
Valve size 1/2” 3/4” 1”
Cv 1.8 2.8 2.8
1 Solder type limits for ASTM Std. B16.18 for 95–5 Tin-Antimony Solder