HEX HS31 Technische Daten
VALVE Maintenance Instructions
HS31 SAMPLE AND DRAIN VALVE
Hex Valve Call Hex Toll-Free:
Division of Richards Industries 800/543-7311 (USA) •800/354-0305 (Canada)
3170 Wasson Road • Cincinnati, Ohio 45209 Fax 513/871-0105 •Phone 513/533/5600
Packing Disassembly
1) Remove the handle (1) by tapping through
actuator (6) using hammer.
2) Remove the spacer rings (2) from inside the
actuator (6) exposing the top of the stem (15).
3) Thread actuator (6) into yoke (8) by turning
counterclockwise until the roll pin (3) and stem
retainer (4) are visible in the actuator (6) handle
hole.
4) Remove roll pin (3) from stem (15) and remove
stem retainer (4). NOTE offset of pin hole in stem
retainer (4). Stem retainer (4) must be
reassembled in same orientation. See figure 1.
Figure 1. Stem Retainer (4)
5) Remove actuator (6) from stem (15) and yoke
(8) by turning clockwise. Thrust washer (5) can
remain in actuator (6).
6) Remove cap screws (7) and (10) to allow
removal of yoke (8), spacers (9) and gland (11).
7) Remove stem (15) from body (16), then packing
follower (12), packing rings (13), and retaining
ring (14), noting the order each ring is placed in
packing chamber to insure new packing is
installed in same order. See figure 2.
Figure 2. Packing Arrangement (13)
Packing Reassembly
1) Inspect stem (15) and packing chamber bore.
Replace stem (15) if damaged or shows evidence
of corrosion in the area of the packing. Make sure
stem (15) and bore are clean and free of packing
or debris. Use solvent only to clean the stem (15)
and packing chamber bore.
2) Lubricate the stem (15) in the packing area with an
Anti-Seize compound such as “THRED-GARD”.
3) Install the stem (15) in the body (16).
Maintenance Instructions
HS31 SAMPLE AND DRAIN VALVE
4) With the handle (1) removed from the stem (15),
install the retaining ring (14) first onto the stem
(15), followed by the rings of packing (13).
Packing rings (13) should be pushed into the
packing chamber one at a time with a blunt
instrument or a cylinder that fits over the stem.
Do not use a screwdriver or knife.
5) Slide the packing follower (12) over the stem
(15). Install the gland (11) and hand tighten the
two short cap screws (10).
6) Put the yoke cap screw spacers (7) in place,
position the yoke (8), and loosely install the cap
screws (7).
7) Thread the actuator (6) into the yoke (8) until the
end of the stem is exposed through the handle
hole. Make sure the stem does not bind, but
rotates smoothly and is pushed against the seat
(17).
8) Continue to reassemble using steps 1-4 above in
reverse.
9) Tight all cap screws (7) and (10) when stem (15)
and handle (1) assemble is complete and
operates smoothly without binding.
Packing Adjustment
•Loosen the packing gland (11) using the cap
screws (10) and rotate the stem back and forth a
few times before making any adjustments to
packing compression.
•After tightening the packing gland (11) again
rotate the stem (15) back and forth.
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