Section XVII. MAINTENANCE OF THREE-WAY VALVES AND ADJUSTABLE FLOW CONTROLLER

Figure 4-68. Filter Gages, Plug Valve, and Flow Controller, Removal and Installation

Figure 4-69. Influent Plug Value; Removal and Installation.

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TM 5-4610-218-12

Section XVII. MAINTENANCE OF THREE-WAY VALVES AND ADJUSTABLE

FLOW CONTROLLER

if it will move freely and turn the plug inside the

WARNING

valve body.

Dry cleaning solvent, P-D-680, used to

(3) Repair or replace all damaged or defective

clean parts, is potentially dangerous.

parts.

Avoid repeated and prolonged

e. Reassembly. Refer to figure 4-70 and reas-

breathing of the vapors and skin con-

semble the plug valve.

tact with the liquid. Do not use near

f. Installation.

open flame or excessive heate. Use in

a well-ventilated area. The flash-point

(1) Refer to figure 4-69 and install the influ-

of P-D-680 is 100-138 F (28-59 C).

ent plug valve.

(2) Refer to figure 4-68 and install the efflu-

4-63. Influent and Effluent Plug Valves.

ent plug valve.

a. General. The influent and effluent plug

4-64. Adjustable Flow Controller Valve in Fil-

valves are in the filter section. One is located above

tered Water Line.

the flow controller valve in the filtered water line,

and one between the filter pump and filter in the co-

a. General. The flow controller valve is located

agulated water line. The effluent plug valve located

in the effluent or filtered water line. The water line

in the filtered water line is a three-way, three-port

is painted green. The function of the flow controller

valve. It directs the flow of water to the storage

valve is to regulate the flow of water through the

tanks or recirculates the water through the wet

filter. There is a knob on the flow controller with a

well for refiltering, depending on how the valve

dial marked O to 25 gpm. The flow can be regulated

handles are positioned. The influent plug valve, lo-

by setting the pointer on the knob to point to the de-

cated in the coagulated water line, is a three-way,

sired flow.

two-port valve. It directs the flow of water to the in-

b. Removal. Refer to figure 4-68 and remove the

fluent section of the filter or to the wash ring of the

adjustable flow controller valve.

filter housing, depending on the position of the

c. Clean, Inspect and Replace.

valve handles.

(1) Clean the flow controller valve with dry

b. Removal.

cleaning solvent P-D-680 and dry thoroughly.

(1) Refer to figure 4-68 and remove the efflu-

(2) Inspect the flow controller for cracks and

ent plug valve.

breaks.

(2) Refer to figure 4-69 and remove the influ-

(3) Inspect the threaded parts for damaged

ent plug valve.

threads.

c. Disassembly. Refer to figure 4-70 and disas-

(4) Replace a defective flow controller.

semble the plug valve.

d. Installation. Refer to figure 4-68 and install

d. Clean, Inspect and Repair.

the adjustable flow controller valve.

(1) Clean the plug valve with dry cleaning sol-

vent P-D-680.

NOTE

(2) Inspect the plug valve for cracks and dam-

Replacement flow controller valve has

aged threads. Check the operation of the lever to see

been adjusted to assure a flow of 25

gpm when pointer is set to 26 gpm.

4-117

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