Cla-Val 129AF-1 - Manual

CFM2
• Accurate Repeatable High Level Shut-off
• "Fail-Safe" Construction
• No Packing Glands Assure Leak-Proof Service
• Serviced Without Removing From Line
• Position Indicator is Standard Equipment
The Cla-Val Model 129AF-1 High Level Shut-Off Valve
automatically opens to fill a storage tank and closes tightly when
liquid level reaches a predetermined point. No attention is required
once adjusted to the desired level. It is a hydraulically-operated,
diaphragm-actuated, pilot-controlled globe pattern valve. Should
the diaphragm become damaged the valve will close tight,
providing "fail safe" operation. The 129AF-1 is controlled by a
CFM2 float actuated pilot mounted near the high level shut-off point
in the tank. The float pilot control is a precision-lapped plate type
valve actuated by a float attached to a lever arm.
ABOVE GROUND
STORAGE TANK
129AF-1
High Level Shut-off Valve
BELOW GROUND
STORAGE TANK
FROM VALVE
PILOT STEM
TO BOTTOM OF TANK
OR FILL LINE DOWN LEG
INLET
OUTLET
CFM2
MODEL 129AF-1
MODEL 129AF-1
Installation Detail
Typical Application
The Model 129AF-1 is installed in the fill line to either
underground or above ground fuel storage tanks. When the
float is down, the valve is wide open allowing tank filling, As
the float rises, flow through the pilot control is slowly
throttled which causes the main valve to throttle smoothly
to a tightly closed position when the tank is full.
The CFM2 float control is mounted in or near an access hatch
and within close proximity of the 129AF-1 valve. The control is
located inside the tank with the center line three inches below
desired shut off level. Provision must be made for a 1/2" pipe
connecting valve and control inlet and for a 1/2" pipe from
control outlet to near tank bottom. If inlet pressure, when
flowing, is less than 10 PSI please consult Cla-Val for
recommendations.
CFM2 Float Control
9.25
10.98
1.12
1.50
5.06
OUTLET 1/2" NPT
TOP VIEW
INLET 1/2" NPT
INLET 1/2" NPT
SIDE VIEW
8.00
4" DIA.
MODEL