Download MDB Crib (7201) Operating instructions

TM 55-4920-394-13&P
Table 3-5. Inspection of Valves
PART
Check valves
INSPECT FOR
Scratches and scoring of running and seating surfaces 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 surfaces 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 surfaces of end fitting, stem, side fitting, and knob.
Sight Tube Bleed
valve
Scratches and scoring of running and seating surfaces 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
valve
Scratches and scoring of running and seating surfaces on plug, handle, ball, valve body, and
bearing.
Flow Control valve
Scratches and scoring of running and seating surfaces of handle, stem, retainer, spool and valve
seat.
3-9