Brochure
58
1213
5
Off-center by-pass assembly with fixed
crack setting of 3.6 psi differential pressure.
Max working pressure: 150 psi.
Working temperature range: 15—230°F.
668
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 fixed setting pressure
is reached, the valve disk gradually opens,
recirculating the flow 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
fixed 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.
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
TwisTop™ thermo-electric actuator.
Twist the top to manually open.
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.
US Patent 7,617,989 B2.
6563
TwisTop
™
Simply twist to manually open
actuator (and activate micro
switch on 656354).
When power is applied,
it returns to Auto position.
Green ring indicates valve
is open.
Code Description Lbs USD
668000
½" x ½"
0.5 131.00
Code Description Lbs USD
656404 24 V AC/DC 0.4 114.00
656414 24 V AC/DC with micro-switch 0.4 144.00
Code Description Lbs USD
656344 24 V AC/DC 0.4 153.00
656354 24 V AC/DC with micro-switch 0.4 181.00
656354R 24 V AC/DC with micro-switch Rehau 0.4 198.00
BRASS DISTRIBUTION MANIFOLD ACCESSORIES
40 VA
Up to 12 actuators per 40 VA transformer.