About Pressure Gauges
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Steam Pressure Gauges




Designed for use with boilers, these gauges have a dual scale that displays pressure in psi and feet of H₂O and displays temperature in °F/°C.
- For Use With: Steam and Water
- Accuracy: ±2.5% Full Scale (Not Graded)
Available Pressure Ranges | |||||
---|---|---|---|---|---|
Pressure Range | Graduation Marks | Numeric Increments | |||
psi | ft. of H₂O | psi | ft. of H₂O | psi | ft. of H₂O |
2 1/2" Dial Dia. | |||||
0 to 75 | 0 to 170 | 5 | 10 | 20 | 50 |
3 1/4" Dial Dia. | |||||
0 to 100 | 0 to 230 | 2 | 10 | 20 | 50 |
0 to 200 | 0 to 460 | 5 | 20 | 40 | 100 |
Display Temp. Range | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Dial Diameter | Pipe Size | °F | °C | Environment Temp. Range, °F | Process Temp. Range, °F | Case Color | Mounting Orientation | Stem Lg. | Shoulder Lg. | Each | |
Bottom Connection | |||||||||||
NPT Male | |||||||||||
3 1/4" | 1/2 | 70° to 320° | 20° to 160° | -40° to 140° | 70° to 320° | Black | Any | 2" | __ | 0000000 | 000000 |
Center Back Connection | |||||||||||
NPT Male | |||||||||||
2 1/2" | 1/4 | 70° to 320° | 20° to 160° | -40° to 140° | 70° to 320° | Black | Any | 1" | __ | 0000000 | 00000 |
2 1/2" | 1/4 | 70° to 320° | 20° to 160° | -40° to 140° | 70° to 320° | Black | Any | 1" | 2" | 0000000 | 00000 |
2 1/2" | 1/4 | 70° to 320° | 20° to 160° | -40° to 140° | 70° to 320° | Black | Any | 1 1/2" | 2" | 0000000 | 00000 |
3 1/4" | 1/2 | 70° to 320° | 20° to 160° | -40° to 140° | 70° to 320° | Black | Any | 2" | __ | 0000000 | 00000 |
Low-Pressure Differential Gauges with U-Tube
Also known as manometers, these gauges come with indicating liquid that moves up and down two columns—the difference in height between them is your pressure. They are commonly used to indicate clogged filters.

- For Use With: Acetylene, Air, Argon, Carbon Dioxide, and Steam
- Accuracy: Not Rated (Not Graded)
Environment Temp. Range | Process Temp. Range | Mounting | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pressure Range, in. of H₂O | Scale Range, in. of H₂O | Numeric Increments, in. of H₂O | Graduation Marks, in. of H₂O | Max. Pressure, psi | Ht. | Min., °F | Max., °F | Min., °F | Max., °F | Gender | Mount Type | Fasteners Included | Hole Dia. | Number of Holes | Each | |
With 1/4 NPT Female Threaded Pipe Connection | ||||||||||||||||
0-10 | 5-0-5 | 1 | 0.1 | 250 | 14" | 35° | 150° | 35° | 250° | Female | Screw On | No | 3/16" | 4 | 0000000 | 0000000 |
0-15 | 7-0-7 | 1 | 0.1 | 250 | 18" | 35° | 150° | 35° | 250° | Female | Screw On | No | 3/16" | 4 | 0000000 | 000000 |
Gauge Siphon Tubes




Also known as pigtails, these siphon tubes protect dry gauges from steam and high-temperature fluids. Add water to the tube to create a protective barrier between your gauge and process media.
Style C requires less maintenance than Styles A, B, and D because the extra bends prolong water retention.
For technical drawings and 3-D models, click on a part number.



Style | Pipe Size | Lg. | Max. Pressure | Specifications Met | Each | |
Brass | ||||||
---|---|---|---|---|---|---|
A | 1/4 | 4" | 1,000 psi @ 400° F | ASTM B43 | 0000000 | 000000 |
A | 1/4 | 4" | 240 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
A | 1/4 | 5 5/8" | 1,000 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
A | 1/4 | 5 5/8" | 240 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
B | 1/4 | 6 1/2" | 1,000 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
B | 1/4 | 6 1/2" | 240 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
C | 1/4 | 7 1/2" | 1,000 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
C | 1/4 | 7 1/2" | 240 psi @ 400° F | ASTM B43 | 0000000 | 00000 |
304 Stainless Steel | ||||||
A | 1/4 | 5 1/2" | 1,500 psi @ 700° F | ASTM A312 | 0000000 | 00000 |
A | 1/4 | 5 1/2" | 440 psi @ 750° F | ASTM A312 | 0000000 | 00000 |
316 Stainless Steel | ||||||
A | 1/4 | 5 1/2" | 450 psi @ 750° F | ASTM A312 | 0000000 | 00000 |
A | 1/2 | 8 7/8" | 1,500 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
A | 1/2 | 8 7/8" | 730 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
B | 1/4 | 6 1/2" | 450 psi @ 750° F | ASTM A312 | 0000000 | 00000 |
B | 1/2 | 10" | 730 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
C | 1/4 | 7 1/4" | 450 psi @ 750° F | ASTM A312 | 0000000 | 00000 |
C | 1/2 | 12" | 730 psi @ 800° F | ASTM A312 | 0000000 | 000000 |
Seamless Steel | ||||||
A | 1/4 | 5 1/2" | 2,000 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
A | 1/4 | 5 1/2" | 580 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
A | 1/2 | 8 7/8" | 1,000 psi @ 700° F | ASTM A106 Grade B | 0000000 | 00000 |
A | 1/2 | 8 7/8" | 1,700 psi @ 800° F | ASTM A106 Grade B | 0000000 | 00000 |
B | 1/4 | 6 1/2" | 2,000 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
B | 1/4 | 6 1/2" | 580 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
C | 1/4 | 7 1/4" | 2,000 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
C | 1/4 | 7 1/4" | 580 psi @ 750° F | ASTM A106 Grade B | 0000000 | 00000 |
Welded Steel | ||||||
A | 1/4 | 5 1/2" | 1,000 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
A | 1/4 | 5 1/2" | 300 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
A | 1/2 | 8 7/8" | 1,000 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
B | 1/4 | 6 1/2" | 1,000 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
B | 1/4 | 6 1/2" | 300 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
C | 1/4 | 7 1/4" | 1,000 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
C | 1/4 | 7 1/4" | 300 psi @ 400° F | ASTM A53 Grade F | 0000000 | 00000 |
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.
Guards with drain port allow you to remove process media.
For technical drawings and 3-D models, click on a part number.
Pipe Connections | |||||||||
---|---|---|---|---|---|---|---|---|---|
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 |
High-Accuracy Pressure-Regulating Valves for Steam

- For Use With: Steam
- Temperature Range: 40° to 450° F
Control steam line pressure with ±1 psi accuracy. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have a cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline. They meet ANSI/FCI 70-2 Class IV for tight shut-off (max. leakage rate of 0.01%). Install 1/4 NPT male pipe (not included) between the control valve and your downstream steam line.
Repair kits (sold separately) include replacement seals, diaphragm, spring, and spring assembly.
For technical drawings and 3-D models, click on a part number.
Valves | |||||||||
---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Repair Kits | |||||||
Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | Choose an Outlet Pressure Range, psi | Each | Each | ||
NPT Female | |||||||||
Cast Iron Body—301 Stainless Steel Diaphragm and 420 Stainless Steel Seal | |||||||||
1/2 | Side | 250 | 1/2 | Side | 0000000 | 000000000 | 0000000 | 0000000 | |
3/4 | Side | 250 | 3/4 | Side | 0000000 | 00000000 | 0000000 | 000000 | |
1 | Side | 250 | 1 | Side | 0000000 | 00000000 | 0000000 | 000000 | |
1 1/4 | Side | 250 | 1 1/4 | Side | 0000000 | 00000000 | 0000000 | 000000 | |
1 1/2 | Side | 250 | 1 1/2 | Side | 0000000 | 00000000 | 0000000 | 000000 | |
2 | Side | 250 | 2 | Side | 0000000 | 00000000 | 0000000 | 00000000 |
Pressure-Regulating Valves for Steam

- For Use With: Steam
- Temperature Range: -20° to 400° F
Automatically reduce a high, variable inlet pressure in your steam system to a lower, stable outlet pressure. Adjust the outlet pressure within the range. These valves have a cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline.
Internal strainers trap debris.
For technical drawings and 3-D models, click on a part number.
Valves | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Repair Kits | ||||||||
Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | End-to-End Lg. | Choose an Outlet Pressure Range, psi | Each | Each | ||
NPT Female | ||||||||||
Cast Iron Body—Bronze Diaphragm and 420 Stainless Steel Seal | ||||||||||
1/2 | Side | 250 | 1/2 | Side | 3 5/8" | 0000000 | 0000000 | 0000000 | 000000 | |
3/4 | Side | 250 | 3/4 | Side | 3 5/8" | 0000000 | 000000 | 0000000 | 00000 | |
1 | Side | 250 | 1 | Side | 4 1/2" | 0000000 | 000000 | 0000000 | 000000 | |
1 1/4 | Side | 250 | 1 1/4 | Side | 4 1/2" | 0000000 | 000000 | 0000000 | 000000 | |
1 1/2 | Side | 250 | 1 1/2 | Side | 6 1/2" | 0000000 | 000000 | 0000000 | 000000 | |
2 | Side | 250 | 2 | Side | 6 1/2" | 0000000 | 000000 | 0000000 | 000000 | |
Cast Iron Body—Bronze Diaphragm and PTFE Seal with Internal Strainer | ||||||||||
1/4 | Side | 150 | 1/4 | Side | 3" | 0000000 | 000000 | 000000 | 00 | |
3/8 | Side | 150 | 3/8 | Side | 3 7/8" | 0000000 | 000000 | 000000 | 00 | |
1/2 | Side | 150 | 1/2 | Side | 4 1/2" | 0000000 | 000000 | 0000000 | 000000 | |
3/4 | Side | 150 | 3/4 | Side | 5 1/8" | 0000000 | 000000 | 0000000 | 000000 | |
1 | Side | 150 | 1 | Side | 5 7/8" | 0000000 | 000000 | 0000000 | 000000 | |
1 1/4 | Side | 150 | 1 1/4 | Side | 6 3/4" | 0000000 | 000000 | 0000000 | 000000 | |
1 1/2 | Side | 150 | 1 1/2 | Side | 6 3/4" | 0000000 | 000000 | 0000000 | 000000 | |
2 | Side | 150 | 2 | Side | 9 1/4" | 0000000 | 00000000 | 0000000 | 000000 |
Extended-Life Pressure-Regulating Valves for Steam

- For Use With: Steam
- Temperature Range: -20° to 400° F
For a longer service life than cast iron valves, these have a durable bronze body. All automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have an internal strainer to trap debris.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | |||||||
---|---|---|---|---|---|---|---|---|
Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | End-to-End Lg. | Choose an Outlet Pressure Range, psi | Each | |
NPT Female | ||||||||
Bronze Body—Bronze Diaphragm and PTFE Seal | ||||||||
1/4 | Side | 250 | 1/4 | Side | 3" | 00000000 | 0000000 | |
3/8 | Side | 250 | 3/8 | Side | 3 7/8" | 00000000 | 000000 | |
1/2 | Side | 250 | 1/2 | Side | 4 1/2" | 00000000 | 000000 | |
3/4 | Side | 250 | 3/4 | Side | 5 1/8" | 00000000 | 000000 | |
1 | Side | 250 | 1 | Side | 5 7/8" | 00000000 | 000000 | |
1 1/4 | Side | 250 | 1 1/4 | Side | 6 3/4" | 00000000 | 00000000 | |
1 1/2 | Side | 250 | 1 1/2 | Side | 6 3/4" | 00000000 | 00000000 | |
2 | Side | 250 | 2 | Side | 9 1/4" | 00000000 | 00000000 |
Corrosion-Resistant Pressure-Regulating Valves for Steam

- For Use With: Steam
- Temperature Range: -40° to 450° F
Regulate steam pressure in wet environments and harsh conditions with these valves that have a 316 stainless steel body for exceptional corrosion resistance. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | |||||||
---|---|---|---|---|---|---|---|---|
Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | End-to-End Lg. | Choose an Outlet Pressure Range, psi | Each | |
NPT Female | ||||||||
316 Stainless Steel Body—316 Stainless Steel Diaphragm and PTFE Seal | ||||||||
1/2 | Side | 400 | 1/2 | Side | 4 1/2" | 0000000 | 000000000 | |
3/4 | Side | 400 | 3/4 | Side | 5 1/8" | 0000000 | 00000000 | |
1 | Side | 400 | 1 | Side | 5 7/8" | 0000000 | 00000000 |