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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Pressure Gauges
More
About Pipe Size
More
Low-Pressure Gauges for Chemicals





A plastic or stainless steel guard, also known as an isolator, protects the gauge from damage caused by corrosive chemicals. Use them with pumps, filters, regulators, and in process lines to measure and display pressures.
Polypropylene and 316 stainless steel guards are more chemical resistant than PVC and CPVC guards.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water, Hydraulic Fluid, Ammonia, Bleach, Boric Acid, Gasoline, Diesel Fuel, and Natural Gas
- Accuracy: ±1.6% Full Scale (Not Graded)
Available Pressure Ranges | |||||
---|---|---|---|---|---|
Pressure Range | Graduation Marks | Numeric Increments | |||
psi | kPa | psi | kPa | psi | kPa |
2 1/2" Dial Diameter | |||||
0 to 15 | 0 to 100 | 0.2 | 2 | 3 | 20 |
0 to 30 | 0 to 200 | 0.5 | 5 | 5 | 50 |
0 to 60 | 0 to 400 | 1 | 10 | 10 | 100 |
0 to 100 | 0 to 700 | 2 | 10 | 20 | 100 |
0 to 160 | 0 to 1,100 | 2 | 20 | 20 | 200 |
4" Dial Diameter | |||||
0 to 15 | 0 to 100 | 0.1 | 2 | 2 | 20 |
0 to 30 | 0 to 200 | 0.5 | 5 | 5 | 50 |
0 to 60 | 0 to 400 | 1 | 10 | 10 | 100 |
0 to 100 | 0 to 700 | 2 | 10 | 20 | 100 |
0 to 160 | 0 to 1,100 | 2 | 20 | 20 | 200 |
Bottom Connection | |||||||
---|---|---|---|---|---|---|---|
Dial Diameter | Pipe Size | Environment Temp. Range, °F | Process Temp. Range, °F | Mounting Orientation | Guard Material | Each | |
NPT Female | |||||||
2 1/2" | 1/4 | -40° to 140° | 0° to 210° | Any | 316 Stainless Steel | 0000000 | 0000000 |
2 1/2" | 1/2 | -40° to 140° | 0° to 210° | Any | 316 Stainless Steel | 0000000 | 000000 |
4" | 1/4 | -40° to 140° | 0° to 210° | Any | 316 Stainless Steel | 0000000 | 000000 |
4" | 1/2 | -40° to 140° | 0° to 210° | Any | 316 Stainless Steel | 0000000 | 000000 |
- For Use With: Water, Salt Water, Hydraulic Fluid, Bleach, Boric Acid, and Carbon Dioxide
- Accuracy: ±2% Mid Scale (Grade B)
Available Pressure Ranges | |||||
---|---|---|---|---|---|
Pressure Range | Graduation Marks | Numeric Increments | |||
psi | kg/cm2 | psi | kg/cm2 | psi | kg/cm2 |
0 to 30 | 0 to 2.1 | 0.5 | 0.05 | 5 | 0.5 |
0 to 60 | 0 to 4.2 | 1 | 0.1 | 10 | 1 |
0 to 150 | 0 to 11.2 | 2 | 0.2 | 20 | 2 |
- For Use With: Water, Salt Water, Hydraulic Fluid, Bleach, Boric Acid, and Carbon Dioxide
- Accuracy: ±2% Mid Scale (Grade B)
Available Pressure Ranges | |||||
---|---|---|---|---|---|
Pressure Range | Graduation Marks | Numeric Increments | |||
psi | kg/cm2 | psi | kg/cm2 | psi | kg/cm2 |
0 to 30 | 0 to 2.1 | 0.5 | 0.05 | 5 | 0.5 |
0 to 60 | 0 to 4.2 | 1 | 0.1 | 10 | 1 |
0 to 150 | 0 to 11.2 | 2 | 0.2 | 20 | 2 |
Vibration-Resistant Pressure Gauges for Chemicals


These gauges have a glycerin-filled dial that reduces needle flutter for precise readings in high-vibration applications reaching 2,000 psi. A 316 stainless steel guard, also known as an isolator, protects the gauge from damage caused by corrosive chemicals. Use them with pumps, filters, regulators, and in process lines to measure and display pressure.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water, Hydraulic Fluid, Ammonia, Bleach, Boric Acid, Gasoline, Diesel Fuel, and Natural Gas
- Accuracy: ±1.6% Full Scale (Not Graded)
Available Pressure Gauges | |||||
---|---|---|---|---|---|
Pressure Range | Graduation Marks | Numeric Increments | |||
psi | kPa | psi | kPa | psi | kPa |
2 1/2" Dial Diameter | |||||
0 to 15 | 0 to 100 | 0.2 | 2 | 3 | 20 |
0 to 30 | 0 to 200 | 0.5 | 5 | 5 | 50 |
0 to 60 | 0 to 400 | 1 | 10 | 10 | 100 |
0 to 100 | 0 to 700 | 2 | 10 | 20 | 100 |
0 to 160 | 0 to 1,100 | 2 | 20 | 20 | 200 |
0 to 200 | 0 to 1,400 | 5 | 20 | 40 | 200 |
0 to 300 | 0 to 2,000 | 5 | 50 | 50 | 400 |
0 to 400 | 0 to 2,800 | 10 | 100 | 50 | 500 |
0 to 600 | 0 to 4,000 | 10 | 100 | 100 | 1,000 |
0 to 1,000 | 0 to 7,000 | 20 | 100 | 200 | 1,000 |
0 to 2,000 | 0 to 14,000 | 50 | 200 | 400 | 2,000 |
4" Dial Diameter | |||||
0 to 15 | 0 to 100 | 0.1 | 2 | 2 | 20 |
0 to 30 | 0 to 200 | 0.5 | 5 | 5 | 50 |
0 to 60 | 0 to 400 | 1 | 10 | 10 | 100 |
0 to 100 | 0 to 700 | 2 | 10 | 20 | 100 |
0 to 160 | 0 to 1,100 | 2 | 20 | 20 | 200 |
0 to 200 | 0 to 1,400 | 5 | 50 | 50 | 200 |
0 to 300 | 0 to 2,000 | 5 | 50 | 50 | 500 |
0 to 400 | 0 to 2,800 | 10 | 100 | 50 | 500 |
0 to 600 | 0 to 4,000 | 10 | 100 | 100 | 800 |
0 to 1,000 | 0 to 7,000 | 20 | 100 | 200 | 1,000 |
0 to 2,000 | 0 to 14,000 | 50 | 200 | 400 | 2,000 |
Bottom Connection | |||||||
---|---|---|---|---|---|---|---|
Dial Diameter | Pipe Size | Environment Temp. Range, °F | Process Temp. Range, °F | Guard Material | Mounting Orientation | Each | |
NPT Female | |||||||
2 1/2" | 1/4 | 35° to 140° | 0° to 210° | 316 Stainless Steel | Any | 000000 | 0000000 |
2 1/2" | 1/2 | 35° to 140° | 0° to 210° | 316 Stainless Steel | Any | 000000 | 000000 |
4" | 1/4 | 35° to 140° | 0° to 210° | 316 Stainless Steel | Any | 000000 | 000000 |
4" | 1/2 | 35° to 140° | 0° to 210° | 316 Stainless Steel | Any | 000000 | 000000 |
High-Pressure Gauges for Chemicals


A 316 stainless steel guard, also known as an isolator, protects the gauge from damage caused by corrosive chemicals. Gauges are commonly used with pumps, filters, regulators, and in process lines to measure and display pressures up to 2,000 psi.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water, Hydraulic Fluid, Ammonia, Bleach, Boric Acid, Gasoline, Diesel Fuel, and Natural Gas
- Accuracy: ±1.6% Full Scale (Not Graded)
Pressure Range | Graduation Marks | Numeric Increments | |||
---|---|---|---|---|---|
psi | kPa | psi | kPa | psi | kPa |
2 1/2" Dial Diameter | |||||
0 to 200 | 0 to 1,400 | 5 | 20 | 40 | 200 |
0 to 300 | 0 to 2,000 | 5 | 50 | 50 | 400 |
0 to 400 | 0 to 2,800 | 5 | 50 | 50 | 500 |
0 to 600 | 0 to 4,000 | 10 | 100 | 100 | 1,000 |
0 to 1,000 | 0 to 7,000 | 20 | 100 | 200 | 1,000 |
0 to 2,000 | 0 to 14,000 | 50 | 200 | 400 | 2,000 |
4" Dial Diameter | |||||
0 to 200 | 0 to 1,400 | 5 | 50 | 50 | 200 |
0 to 300 | 0 to 2,000 | 5 | 50 | 50 | 500 |
0 to 400 | 0 to 2,800 | 5 | 50 | 50 | 500 |
0 to 600 | 0 to 4,000 | 10 | 100 | 100 | 800 |
0 to 1,000 | 0 to 7,000 | 20 | 100 | 200 | 1,000 |
0 to 2,000 | 0 to 14,000 | 50 | 200 | 400 | 2,000 |
Bottom Connection | |||||||
---|---|---|---|---|---|---|---|
Dial Diameter | Pipe Size | Environment Temp. Range, °F | Process Temp. Range, °F | Guard Material | Mounting Orientation | Each | |
NPT Female | |||||||
2 1/2" | 1/4 | -40° to 140° | 0° to 210° | 316 Stainless Steel | Any | 000000 | 0000000 |
2 1/2" | 1/2 | -40° to 140° | 0° to 210° | 316 Stainless Steel | Any | 000000 | 000000 |
4" | 1/4 | -40° to 140° | 0° to 210° | 316 Stainless Steel | Any | 000000 | 000000 |
4" | 1/2 | -40° to 140° | 0° to 210° | 316 Stainless Steel | Any | 000000 | 000000 |
Gauge Guards



Also known as isolators or diaphragm seals, these protect gauges from corrosive process media. Fill guards with ISO Grade 32 hydraulic oil (not included) before use.
316 stainless steel guards provide excellent corrosion and chemical resistance and can handle higher temperatures and pressures than plastic guards.
Polypropylene and PVDF guards are more chemical resistant than PVC and CPVC guards.
Guards with drain port allow you to remove process media.
For technical drawings and 3-D models, click on a part number.
Pipe Connections | |||||||||
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Inlet | Outlet | Gasket Material | For Use With | Min. Pressure, psi | Max. Pressure | Max. Temp., °F | Ht. | Each | |
316 Stainless Steel Body | |||||||||
1/4 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydrogen, Liquid Nitrogen, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 1 1/2" | 0000000 | 0000000 |
1/2 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydrogen, Liquid Nitrogen, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 1 1/2" | 0000000 | 000000 |
1/2 NPT Female | 1/2 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydrogen, Liquid Nitrogen, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 1 1/2" | 0000000 | 000000 |
316 Stainless Steel Body with 1/4 NPT Female Drain Port | |||||||||
1/4 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydrogen, Liquid Nitrogen, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 2" | 0000000 | 000000 |
1/2 NPT Female | 1/4 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydrogen, Liquid Nitrogen, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 2" | 0000000 | 000000 |
1/2 NPT Female | 1/2 NPT Female | 316 Stainless Steel | Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydrogen, Liquid Nitrogen, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water | 60 | 2,500 psi @ 72° F | 300° | 2" | 0000000 | 000000 |
PVC Plastic Body | |||||||||
1/4 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 140° | 2 3/4" | 0000000 | 000000 |
1/2 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 140° | 2 3/4" | 0000000 | 000000 |
CPVC Plastic Body | |||||||||
1/4 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 190° | 2 3/4" | 0000000 | 000000 |
1/2 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 190° | 2 3/4" | 0000000 | 000000 |
Polypropylene Plastic Body | |||||||||
1/4 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Carbon Dioxide, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 240° | 2 3/4" | 0000000 | 000000 |
PVDF Plastic Body | |||||||||
1/2 NPT Female | 1/4 NPT Female | Fluoroelastomer Rubber | Bleach, Boric Acid, Carbon Dioxide, Hydraulic Fluid, Salt Water, Water | __ | 150 psi @ 72° F | 300° | 2 3/4" | 0000000 | 000000 |