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Figure 7: 275AF/AP/APF Valve Assemblies
275APF
220A
275AF & 275AP
Table 1: Replacement Parts
Description
Chamber, Cast Iron (Not shown)
Chamber, Steel (Not shown)
Valve Body
Gasket*
Cap Screw (6)
Float Ball, 275AF/275AP
Float Ball, 275APF
Float Rod, 275AF/275AP
Float Rod, 275APF
Float Block
Float Nut
Nut
(275APF - Qty 1, 275AF/275AP - Qty 2)
Lock Washer
(275APF - Qty 3, 275AF/275AP - Qty 4)
Adjusting Bolt
Link
Lever Pin
Spacer
Roll Pin
Adjusting Nut
Needle and Seat Bushing*
(Must be replaced as matched set)
Mounting Flange (Not shown)
*Spare Parts Kit
(Includes Gasket and Needle and Seat
Bushing)
SERVICE INSTRUCTIONS
5.
Secure the valve body so the float is approximately
horizontal. Turn the needle in or out of the adjusting nut until
the float is horizontal when the needle is seated in the bushing.
6.
Then screw the needle ½-turn into the adjusting nut so the
float is slightly above horizontal when the needle is seated in
275AP-SB13-01
73
220
324, 55
343A
322, 55
73
Part No.
299A
B-10985
270A-VB
73
325
220A
220
343A
343D
230Z
322
224
55
369
431
411
11S
211-1/2
204E
262403S-1/16
262403S-5/64
262403S-3/32
262A403A-1/8
262A403A-3/16
298A
K275AP1
(1/16", 5/64", 3/32" orifice)
K275AP2
(1/8", 3/16" orifice)
(Needle & seat replacement, cont'd)
211-1/2
343D
230Z
55
270A-VB,
325
431
411, 11S
270A-VB,
325
the bushing (Figure 8). Tighten the lock nut to secure needle
position.
7.
Remove the lever pin and pull the needle from the
bushing. Reassemble the float block to the valve body using
the lever pin and spacers (11S) to ensure the float block
(230Z) is centered on the link (431).
8.
Peen the lever pin to retain in place and check for free
movement of the mechanism.
Figure 8: Needle Adjustment
FLOAT SHOULD STAND
JUST ABOVE HORIZONTAL
WHEN NEEDLE IS SEATED
9.
With the needle fully seated in the bushing, check to make
sure there is approximately 0.16" (4mm) clearance between
the adjusting bolt head (369) and the valve body. A #20 drill bit
may be used to check this clearance. (See Figure 9.) Setting
the bolt head clearance ensures 0.09" (2mm) of needle travel
when the float drops due to low liquid level.
10. Be sure the lock nut (324) is tightened against the float
block and the entire mechanism pivots smoothly before re-
installing the valve.
Figure 9: Final Adjustment
0.09 [2.3]
TO SET
NEEDLE
TRAVEL,
ADJUST
BOLT-HEAD
CLEARANCE
SEAT
224, 55
BUSHING
204E
369, 324
0.16 [4.1]
3
NEEDLE
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