TM 55-4920-394-13&P
Table 3-5. Inspection of Valves
PART
INSPECT FOR
Check valves
Scratches and scoring of running and seating sur-
faces of the poppets and valve bodies.
Inspect springs for pitting, cracks, broken ends,
and lack of tension.
Relief valves
Scratches and scoring of running and seating sur-
faces of valve discs, poppets, stems, needle
valves and valve bodies.
Pitting, cracks, lack of tension and broken ends
on springs.
Fill valve
Scratches and scoring of running and seating sur-
faces of end fitting, stem, side fitting, and knob.
Sight Tube Bleed
Scratches and scoring of running and seating sur-
valve
faces of knob, stem, seat, poppet, and nut.
Pitting, cracks, lack of tension and broken ends
on springs.
Cracked or chipped edges on window.
Selector Four-Way
Scratches and scoring of running and seating sur-
valve
faces on plug, handle, ball, valve body, and
bearing.
Flow Control valve
Scratches and scoring of running and seating sur-
faces of handle, stem, retainer, spool and valve
seat.
3-9