Product Overview

48
1
48
1213115
48
tech. broch. 01170
Off-center by-pass assembly with fi xed
crack setting of 3.6 psi differential pressure.
Max working pressure: 150 psi.
Working temperature range: 15—230°F.
668
Code Description Lbs USD
668000 ½" x ½" 0.5 117.80
BATH
CALEFFI
CALEFFI
1
2
3
4
L/MIN
1
2
3
4
L/MIN
1
2
3
4
L/MIN
1
2
3
4
L/MIN
1
2
3
4
L/MIN
HOBBY WC
BEDROOM
CAMERA
CALEFFI
BATHHOBBY WC
BEDROOM
CAMERA
CALEFF
CALEFFI
CALEFFI
F
F
The by-bass valve contains a check valve
connected to a contact spring. When
the fi xed setting pressure is reached, the
valve disk gradually opens, recirculating
the fl ow in proportion to the closing of the
thermo-electric valves and maintaining
a constant differential pressure in the
manifold circuit.
The differential by-pass assembly features
a fi xed setting that cannot be changed.
The small, compact size and offset
connections makes this kit particularly
easy to mount after installing thermo-
electric valves on the manifold. It does not
require a larger or deeper zone box than
those used for normal manifolds.
Low current draw thermo-electric actuator
for use with 663 and 668S1 series
distribution manifolds
Hermetically sealed for upside down installation..
Pop-up feature
Power supply: 24 V AC/DC.
Initial current draw: ≤ 250 mA.
Power consumption: 3 W.
Rating of micro-switch contacts: 5 A (24 V).
31.5" wire lead connection.
6564
tech. broch. 01198
Code Description Lbs USD
656404 24 V AC/DC 0.4 103.30
656414 24 V AC/DC with micro-switch 0.4 129.20
TwisTop™ thermo-electric actuator for use
with return manifolds.
Twist the top to manually open.
Power supply: 24 V AC/DC.
Initial current draw: 800 mA.
Power consumption: 3 W.
Rating of micro-switch contacts: 5 A (24 V).
31.5" wire lead connection.
US Patent 7,617,989 B2.
6563
TwisTop
™
tech. broch. 01170
Code Description Lbs USD
656304 24 V AC/DC 0.4 137.70
656314 24 V AC/DC with micro-switch 0.4 163.40
656314R 24 V AC/DC with micro-switch Rehau 0.4 178.10
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