About Pressure Gauges
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About Pipe Size
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Extreme Vibration-Resistant Pressure Gauges
Unlike other gauges that have multiple moving parts that can shake loose, these have only one internal part. They are the most shock-resistant gauges we offer and allow for precise readings in high-vibration applications. Use them with pumps, filters, regulators, and in process lines to measure and display pressure. Gauges meet MIL-G-18997 for resistance to salt spray and washdown environments. They have a safety case that blows out in the back under excess pressure, protecting the operator in front. Mount them with the dial face upright.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water, Hydraulic Fluid, Gasoline, Diesel Fuel, Natural Gas, Refrigerant, and Salt Water
- Accuracy: ±1% Full Scale (Grade 1A)
Available Pressure Ranges | ||
|---|---|---|
| Pressure Range, psi | Graduation Marks, psi | Numeric Increments, psi |
| 0 to 100 | 1 | 10 |
| 0 to 200 | 2 | 20 |
| 0 to 1,000 | 10 | 100 |
| 0 to 2,000 | 20 | 200 |
| 0 to 5,000 | 50 | 500 |
Mounting | Bolt | Flange | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dial Diameter | Pipe Size  | Environment Temp. Range, °F | Process Temp. Range, °F | Orientation | Fasteners Included | Circle Dia. | Hole Dia. | No. of Holes | Location | OD | Each | |
Bottom Connection (Flange Mount) | ||||||||||||
NPT Male | ||||||||||||
| 4 1/2" | 1/4 | -65° to 400° | -65° to 600° | Upright | No | 5 3/8" | 7/32" | 3 | Back | 5 13/16" | 0000000 | 0000000 |
Lower Back Connection (Flange Mount) | ||||||||||||
NPT Male | ||||||||||||
| 4 1/2" | 1/4 | -65° to 400° | -65° to 600° | Upright | No | 5 3/8" | 7/32" | 3 | Back | 5 13/16" | 0000000 | 000000 |
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: 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 |
- For Use With: Water, Salt Water, Hydraulic Fluid, 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 |
Bottom Connection | ||||||||
|---|---|---|---|---|---|---|---|---|
| Dial Diameter | Pipe Size | Environment Temp. Range, °F | Process Temp. Range, °F | Case Color | Guard Material | Guard Color | Each | |
NPT Female | ||||||||
| 2" | 1/4 | 40° to 240° | 40° to 240° | Black | Polypropylene Plastic | White | 0000000 | 0000000 |
Sights for Quick-Clamp Sanitary Tube Fittings
Gasket, Quick-Clamp Fitting, And
Tube Fitting (All Sold Separately)
Monitor food, brewery, chemical, pharmaceutical, and biotech processing lines with these sights that attach to quick-clamp fittings for fast installation and easy removal for cleaning. All have a one-piece design, so there are no crevices where bacteria can grow. A
304 stainless steel sights have a ring that's embedded around their shatter-resistant plastic window. This design protects the sights from chipping or cracking while under the stress of the quick-clamp fitting. All withstand harsh cleaners and sanitizers for clean-in-place (CIP) and steam-in-place (SIP) applications. They do not contain Bisphenol A (BPA), Bisphenol B (BPB), or BPA derivatives (BPX), which are chemicals that can contaminate your process lines. All meet ASME BPE design standards for bioprocessing equipment that ensure purity and safety.
For superior strength and reliability, choose 2205 stainless steel sights. All have a glass window that’s melted around a high-strength ring, so they won’t shatter, leak, or lose their shape under high pressure, heat, chemicals, or impact. They withstand harsh cleaners and sanitizers for clean-in-place (CIP) and steam-in-place (SIP) applications. USP Class VI and TUV Rheinland Certified, these sights meet safety standards in the U.S. and Europe. They also meet DIN standards for glass materials used in sights, ASTM standards for materials used in boilers and pressure vessels, and ASME BPE design standards for bioprocessing equipment that ensure purity and safety.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | For Flange OD | Window Dia. | Max. Pressure | Min. | Max. | For Use With | Features | Specifications Met | Each | |
304 Stainless Steel Ring with Plastic Window | ||||||||||
| 1" | 1.98" | 1 1/4" | 150 psi @ 70° F | Not Rated | 200° | Water, Acetic Acid, Air, Alcohol-Based Solvents, Compressed Air, Salt Water, Steam | One-Piece Construction | ASME BPE | 0000000 | 0000000 |
| 2" | 2.52" | 1 3/4" | 150 psi @ 70° F | Not Rated | 200° | Water, Acetic Acid, Air, Alcohol-Based Solvents, Compressed Air, Salt Water, Steam | One-Piece Construction | ASME BPE | 0000000 | 000000 |
| 4" | 4.68" | 3 1/4" | 30 psi @ 70° F | Not Rated | 200° | Water, Acetic Acid, Air, Alcohol-Based Solvents, Compressed Air, Salt Water, Steam | One-Piece Construction | ASME BPE | 0000000 | 000000 |
2205 Stainless Steel Ring with Glass Window | ||||||||||
| 1", 1 1/2" | 1.98" | 1" | 230 psi @ 70° F | -40° | 500° | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | One-Piece Construction | ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI | 0000000 | 000000 |
| 2" | 2.52" | 1 3/16" | 230 psi @ 70° F | -40° | 500° | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | One-Piece Construction | ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI | 0000000 | 000000 |
| 3" | 3.58" | 1 1/2" | 150 psi @ 70° F | -40° | 500° | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | One-Piece Construction | ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI | 0000000 | 000000 |
| 4" | 4.68" | 2 3/16" | 150 psi @ 70° F | -40° | 500° | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | One-Piece Construction | ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI | 0000000 | 000000 |
Easy-View Oil-Level Indicators
Made with clear, shatter-resistant plastic, these indicators don't require a shield to protect them like other oil-level indicators, so you can check your hydraulic fluid or oil level from any angle. They’re often found on gear boxes, crank cases, and other reservoirs. These indicators mount from the outside of your tank. The vent prevents pressure buildup, which can affect the level displayed. Within the vent, there is a filter for keeping out particles as small as table salt. Unthread the vent to clean its filter or to replace it with your own vent, plug, fitting, or sensor. These indicators also have adjustable rings for marking levels critical to your system.
For technical drawings and 3-D models, click on a part number.
Temp. Range, °F | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Overall Ht. | Window Ht. | Max. Pressure | Min. | Max. | Fitting Material | Window Material | Features | Includes | Each | |
Copolyester Plastic | ||||||||||
3/8 NPT Male Thread | ||||||||||
| 3 3/4" | 1 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 000000 |
| 6 3/4" | 4 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 9 3/4" | 7 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 12 3/4" | 10 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 18 3/4" | 16 7/8" | 65 psi @ 70° F | -40° | 200° | Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 000000 |
1/2 NPT Male Thread | ||||||||||
| 3 13/16" | 1 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 6 13/16" | 4 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 9 13/16" | 7 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 12 13/16" | 10 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 18 13/16" | 16 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 000000 |
3/4 NPT Male Thread | ||||||||||
| 3 13/16" | 1 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 6 13/16" | 4 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 9 13/16" | 7 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 12 13/16" | 10 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 00000 |
| 18 13/16" | 16 7/8" | 65 psi @ 70° F | -40° | 200° | 304 Stainless Steel | Copolyester Plastic | 3-Micron Filter, UV Resistant, Vent | Level Rings | 0000000 | 000000 |
Level Indicators with Shut-Off Valve
Shut-off valves stop flow so you can clean and replace gauge glass without removing these indicators from your equipment.
316 stainless steel indicators are more corrosion resistant than brass or bronze indicators.
Use indicators with stainless steel drain valve on expansion tanks.
Indicators with needle stem have a stem in the lower shut-off valve to clear the orifice as the valve closes.
Indicators with automatic shut-off will temporarily close if the gauge glass breaks. The valves must be closed manually for permanent shut-off.
For technical drawings and 3-D models, click on a part number.
Level Indicators | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Temp. Range, °F | Replacement Glass | |||||||||||||
| Connection Ctr.-to-Ctr. | Overall Ht. | Window Ht. | Body Wd. | Drain Cock Dia. | Max. Pressure | Max. Steam Pressure | Min. | Max. | For Use With | No. of Guard Rods | Each | Each | ||
Bronze | ||||||||||||||
3/8 NPT Male Thread with Needle Stem | ||||||||||||||
| 11 1/4" | 13 5/8" | 7" | 3 7/8" | 1/4" | 400 psi @ 70° F | 200 psi @ 400° F | 35° | 400° | Water, Hydraulic Fluid, Salt Water, Steam | 2 | 0000000 | 0000000 | 0000000 | 000000 |
1/2 NPT Male Thread with Needle Stem | ||||||||||||||
| 13 1/4" | 15 5/8" | 9" | 3 15/16" | 1/4" | 400 psi @ 70° F | 200 psi @ 400° F | 35° | 400° | Water, Hydraulic Fluid, Salt Water, Steam | 2 | 0000000 | 000000 | 0000000 | 00000 |
1/2 NPT Male Thread with Needle Stem and Automatic Shut-Off | ||||||||||||||
| 13 1/4" | 15 5/8" | 9" | 3 15/16" | 1/4" | 400 psi @ 70° F | 200 psi @ 400° F | 35° | 400° | Water, Hydraulic Fluid, Salt Water, Steam | 2 | 0000000 | 000000 | 0000000 | 00000 |
3/4 NPT Male Thread with Needle Stem | ||||||||||||||
| 17 1/2" | 20" | 13" | 4 3/16" | 1/4" | 370 psi @ 70° F | 200 psi @ 400° F | 35° | 400° | Water, Hydraulic Fluid, Salt Water, Steam | 2 | 0000000 | 000000 | 0000000 | 00000 |
3/4 NPT Male Thread with Needle Stem and Automatic Shut-Off | ||||||||||||||
| 17 1/2" | 20" | 13" | 4 3/16" | 1/4" | 370 psi @ 70° F | 200 psi @ 400° F | 35° | 400° | Water, Hydraulic Fluid, Salt Water, Steam | 2 | 0000000 | 000000 | 0000000 | 00000 |
Brass | ||||||||||||||
1/2 NPT Male Thread with Needle Stem | ||||||||||||||
| 14" | 16 1/4" | 9" | 4 5/8" | 1/4" | 400 psi @ 70° F | 200 psi @ 400° F | 35° | 400° | Water, Hydraulic Fluid, Salt Water, Steam | 4 | 0000000 | 000000 | 0000000 | 00000 |
1/2 NPT Male Thread with Needle Stem and Automatic Shut-Off | ||||||||||||||
| 14" | 16 1/4" | 9" | 4 5/8" | 1/4" | 400 psi @ 70° F | 200 psi @ 400° F | 35° | 400° | Water, Hydraulic Fluid, Salt Water, Steam | 4 | 0000000 | 000000 | 0000000 | 00000 |
3/4 NPT Male Thread with Needle Stem | ||||||||||||||
| 18" | 20 1/4" | 13" | 4 5/16" | 1/4" | 370 psi @ 70° F | 200 psi @ 400° F | 35° | 400° | Water, Hydraulic Fluid, Salt Water, Steam | 4 | 0000000 | 000000 | 0000000 | 00000 |
3/4 NPT Male Thread with Needle Stem and Automatic Shut-Off | ||||||||||||||
| 18" | 20 1/4" | 13" | 4 5/16" | 1/4" | 370 psi @ 70° F | 200 psi @ 400° F | 35° | 400° | Water, Hydraulic Fluid, Salt Water, Steam | 4 | 0000000 | 000000 | 0000000 | 00000 |