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F-4600 With LCD Flow Meter Manual 06/18 - 2020-3 / 35874 Page 10
Flow Direction
The sensor port is always on
the downstream end of meter.
Retaining Nut SealCoupling
The ow sensor is installed with threaded meter couplings and at sealing gaskets as shown
below. Orient the sensor body by aligning the ow direction arrow with the direction of ow
in the pipe.
Model Meter Size
Min.
Compression
Min. Turn Past
Initial Contact
Degrees of
Rotation
F-4600-050 ½” 30% 1/2 180°
F-4600-340 ¾” 30% 1/3 120°
F-4600-341 ¾” 30% 1/3 120°
F-4600-010 1” 30% 2/5 140°
F-4600-011 1” 30% 2/5 140°
F-4600-130 1¼” 30% 2/5 140°
F-4600-150 1½” 30% 4/9 160°
F-4600-200 2” 30% 1/2 180°
INSTALLING METER COUPLINGS
• Inspect seating surfaces on the meter’s body and tail piece prior to assembly. Surfaces should be
clean and free of any burs or markings.
• Install the gasket in tail piece. Thread union onto meter’s body, by hand, until gasket and mating
surfaces make rst contact. Mark coupling nut and tail piece.
• Place a corresponding mark on the coupling nut, # of degrees (based on table above) counter
clockwise. Hold meter body while rotating coupling nut clockwise until marks line up. DO NOT
over-tighten.
• Repeat process on opposite side of ow meter body.
NOTE: Torque setting is not an accurate means of gaging compression on gasket due to the lack of
resilience in the gasket material.
• Pressurize system and check for leaks. If any leak is present, DO NOT over-tighten. Relieve pressure
and loosen coupling nuts. Remove and inspect the gasket for damage. Repeat installation process.
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