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22-13
schneider-electric.us
Industrial, Type G Pressure Switches
Class 9012 / Refer to Catalog 9012CT9701
Type G Pressure Switches
NEMA 1
Open Type
Table 22.26: Fixed Differential, Open Type or NEMA 1 Enclosure
Range On
Decreasing
Pressure
psig
Approximate
Differential
at Mid-Range
psig [3]
Maximum Allowable Pressure
psig
Open
Type
NEMA
1
Type Type
Diaphragm Actuated—Nitrile (Buna-N) Diaphragm, Zinc Plated Steel Housing
0.2–10 0.4 ±0.1 100 GRO1 GRG1
1–40 1.2 ±0.3 100 GRO3 GRG3
1.5–75 2.2 ±0.4 240 GRO4 GRG4
3–150 4.2 ±1 475 GRO5 GRG5
5–250 7.4 ±2 750 GRO6 GRG6
13–425 13 ±3 850 — GSG1
20–675 19 ±5 2000 — GSG2
Piston Actuated—#440 Stainless Steel Piston. #303 Stainless Steel Housing,
Viton
®
Fluorocarbon Diaphragm and O-Ring, Teflon
®
Retaining Ring
20–1000 49 ±10 10000 — GTG1
90–2900 141 ±15 15000 GTO2 GTG2
170–5600 200 ±40 20000 GTO3 GTG3
270–9000 350 ±45 25000 — GTG4
Table 22.27: Adjustable Differential, Open Type or NEMA 1 Enclosure
Range On
Decreasing
Pressure
psig
Approximate Mid-
Range Differential
Adds to Decreasing
Set Point [3]
Maximum Allowable Pressure
psig
Open
Type
NEMA
1
Type Type
Diaphragm Actuated—Nitrile (Buna-N) Diaphragm, Zinc Plated Steel Housing
0.2–10 0.4–0.9 100 GNO1 GNG1
1–40 1.2–3.6 100 GNO3 GNG3
1.5–75 2.2–6.6 240 GNO4 GNG4
3–150 4.2–13.2 475 GNO5 GNG5
5–250 7.4–33.6 750 GNO6 GNG6
13–425 13–37.2 850 GPO1 GPG1
20–675 19–58.8 2000 GPO2 GPG2
Piston Actuated—#440 Stainless Steel Piston. #303 Stainless Steel Housing,
Viton Fluorocarbon Diaphragm and O-Ring, Teflon Retaining Ring
20–1000 49–150 10000 —
GQG1
90–2900 141–455 15000
GQO2 GQG2
170–5600 200–950 20000
GQO3 GQG3
270–9000 350–1400 25000 —
GQG4
Table 22.28: Available Modifications [4]
Modification
Applies to
Form
Standard Nitrile (Buna-N) diaphragm in #316
stainless
steel housing
Not available on GNG1, GNO1, GRG1, or GRO1.
Available on all other GNG, GNO, GPG, GPO, GRG,
GRO, GSG, and GSO switches.
Q1
Ethylene propylene diaphragm in #316
stainless steel
housing
Not available on GNG1, GNO1, GRG1, or GRO1.
Available on all other GNG, GNO, GPG, GPO, GRG,
GRO, GSG, and GSO switches.
Q3
Viton fluorocarbon diaphragm in #316
stainless
steel housing
Not available on GNG1, GNO1, GRG1, or GRO1.
Available on all other GNG, GNO, GPG, GPO, GRG,
GRO, GSG, and GSO switches.
Q4
1/4–18 NPT external thread pressure
connection
GNG, GNO, GRG, GRO
Z
1/2–14 NPT external thread, 1/4–18 NPTF
internal thread
pressure connection. Standard actuator only.
GNG, GNO, GRG, GRO
Z16
7/16–20 UNF-2B internal thread pressure
connection
GNG, GNO, GPG, GPO, GQG, GQO, GRG, GRO, GSG,
GSO, GTG, GTO
Z18
Table 22.29: 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 A26S
Acceptable Wire Sizes 12-22 AWG
Recommended Terminal Clamp Torque 7 lb-in
Electrical Rating page 22-16
Temperature Rating page 22-16
Renewal Parts Kits page 22-30
File E12158 File LR25490
CCN NKPZ Class 3211-03
22
PRESSURE, VACUUM, AND FLOAT
SWITCHES
[3] Determines operating point on rising pressure.
[4] Some product configurations are not available—contact your Schneider Electric representative for details.
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All Rights Reserved
9/24/2016