4
THERMOSTATIC BULB
INSTALLATION
FOR THREE-WAY VALVES
1. Install the bulb as close as possible to the outlet
of the mixed water line. See Figure No. 7.
2. Immerse bulb as far as possible into the pipeline.
ALL INSTALLATIONS
The capillary tubing is the flexible tubing that connects
the bulb and the valve.
IMPORTANT:
Capillary tubing may only be bent on a
4" (100 mm), or larger radius. It must never be cut,
kinked, smashed or twisted.
1. Permanently fasten the capillary tubing to a
permanent location
other than
steam pipes, cold
water lines, or any other place where extreme
temperatures are incurred.
2. Form a loop with a few turns of tubing and place
next to the regulator. This helps to absorb vibra-
tions in the pipeline.
SEPARABLE WELL INSTALLATION
Separable wells protect the bulb and allow the bulb to be
removed without draining the pipeline or tank.
1. Install separable well in tank or piping.
2. Coat sensing bulb with high temperature grease.
3. Insert sensing bulb and gasket into the separable well.
4. Securely tighten with four (4) mounting screws.
HOT
COLD
AS CLOSE
AS PRACTICAL
REGULATOR
THERMOSTATIC BULB
TOP
MIX
B
C
A
Figure No. 7 - Three-Way Valve
Figure No. 8 - Separable Well Installation
THERMOSTATIC BULB
SEPARABLE WELL
GASKET
FLANGE
BUSHING SCREW
ARMORED CAPILLARY TUBING
DISCARD BULB BUSHING WHEN
SEPARABLE WELL IS USED.
Summary of Contents for Bell & Gossett Hoffman Specialty 1140 Series
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