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Machine Tool, Modifications, and
Accessories
Pressure Switches
Class 9012 / Refer to Catalog 9012CT9701
Factory Modifications and Accessories
Table 22.61: Factory Modifications for Class 9012 Pressure Switches
Modification
Applies to Pressure Switch Type
Form
Lock on rising pressure, manual reset only Available on GDW, GDWM, GEW, GEWM, GFW, GFWM only
E3
120 Vac or Vdc neon pilot light
Available on all GAW–GMW, GAWM–GFWM
with clear lens G17
with red lens G18
24 Vdc only LED
For pilot light conversion kits:
See 9998 PC-306–308.
Complete Class and Type information required
with clear lens G21
with red lens G22
24 Vdc LED pilot light with green lens
Class 9012 GAW–GMW and GAWM–GFWM, or
Class 9016 GAW and Class 9025G
G23
SPDT snap switch rated 1.1 A at 125 Vdc
(minimum differential doubles)
Available on GAR–GFR, GAW–GJW, GAWM–GFWM
H3
Prewired 5-pin Brad Harrison male receptacle #41310 or interchangeable Crouse-Hinds
receptacle.
For use with Brad Harrison female portable plug #41306, 41307, 41308, or equivalent.
Available on GAW–GJW single pole devices only
H10
or
H11
Micro connector, 4-pin, for 24 Vdc pilot light G•W (single pole only), except GAW2 and Form B2.
H17
External range adjustment (includes knob and range scale window)
GAW–GFW, GAWM–GFWM, GKW–GMW
K
External range adjustment slotted for screwdriver
(includes range scale window)
GAW–GFW, GAWM–GFWM, GKW–GMW
K1
Pg 13.5 conduit thread and 1/4—19 BSP pressure connection G•WM only
M12
Standard Nitrile (Buna-N) diaphragm in #316 stainless steel flange
Not available on Types 1 and 21.
Available on all other GAR, GAW, GBR, GBW, GDR, GDW, GER, GEW, GAWM,
GBWM, GDWM, GEWM, GGW, GHW, GKW, and GLW switches.
Q1
Viton
®
fluorocarbon diaphragm in #316 stainless steel flange
Not available on Types 1 and 21.
Available on all other GAR, GAW, GBR, GBW, GDR, GDW, GER, GEW, GAWM,
GBWM, GDWM, GEWM, GGW, GHW, GKW, and GLW switches.
Q4
Range scale window (standard with Forms K and K1)
GAW–GMW, GAWM–GFWM
V1
Special setting specified
(If indicating only a fixed differential setting, specify whether this setting is on increasing
or decreasing pressure. )
All 9012G Y1
1/4"-18 NPT external thread pressure connection
GAR, GAW, GDR, GDW, GGW, GKW
Not available in combination with Forms Q1, Q3, Q4.
Z
1/2"-14 NPT external thread, 1/4"-18 NPTF internal thread pressure connection
GAR, GAW, GDR, GDW, GGW, GKW
Not available in combination with Forms Q1, Q3, Q4.
Z16
7/16"-20 UNF-2B internal thread pressure connection
GAR–GFR; GAW–GMW
Not available in combination with Forms Q1, Q3, Q4.
Z18
Table 22.62: Factory Modifications for Renewal Parts Kits for Class 9012 Pressure Switches
Suffixes for renewal parts kits, see page 22-34
Modification
Applies to Parts Kit Type
Form
SPDT snap switch rated 1.1 A at 125 Vdc (minimum differential doubles)
9998PC313 H3
Standard Nitrile (Buna-N) diaphragm in #316 stainless steel flange
9998PC177–179, 268, 269
Q1
9998PC265–267
Viton
®
fluorocarbon diaphragm in #316 stainless steel flange
9998PC177–178, 268, 269
Q4
9998PC265–267
1/4"-18 NPT external thread pressure connection
9998PC265–269 Z
1/2"-14 NPT external thread, 1/4"-18 NPTF internal thread pressure connection
9998PC265–269 Z16
7/16"-20 UNF-2B internal thread pressure connection
9998PC177, 178, 265–273
Z18
Table 22.63: Class 9049 Accessories for Class 9012 Pressure Switches
Description Applies to Class Type
Stainless steel surge reducer for use on oils, coolants, and hydraulic fluids (not recommended for air or water)
9012G 9049A26S
22
PRESSURE, VACUUM, AND FLOAT
SWITCHES