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    27 Products
    About Pressure Gauges
    industrial info icon

    Find a gauge with the right connection material and dial type—many with traceable calibration certificates.

    Gas Pressure Gauges

    Use these gauges with pumps, filters, regulators, and in process lines to monitor the pressure of compressed gas. Mount them with the dial face upright. Gauges for use with acetylene can also be used in welding applications.
    Brass Case with Brass Connection—Single Scale (Pounds per Square Inch)
    Image of Product. Front orientation. Pressure Gauges. Gas Pressure Gauges, Single Scale, Bottom Connection.
    Image of Attribute. Bottom Connection. Front orientation. Gas Pressure Gauges, Bottom Connection.

    Bottom Connection

    Bottom

    Connection

    Gauges with brass case are cleaned to meet ASME B40.1, Level IV for oxygen service.
    Temp.
    Range, ° F
    Bottom
    Connection
    Dial
    Dia.
    Pipe
    Size
    Environment
    Process
    For Use With
    Accuracy
    Choose a Pressure Range
    Each
    Upright Mount
     
    NPT Male
    2"1/4
    		-40 to 140-40 to 140Acetylene
    Air
    Carbon Dioxide
    Oxygen    		±2% Midscale (Grade B)0 to 30 psi, 0 to 60 psi, 0 to 100 psi, 0 to 200 psi, 0 to 400 psi, 0 to 600 psi, 0 to 1,000 psi, 0 to 2,000 psi, 0 to 3,000 psi, 0 to 4,000 psi32255K7000000
    2 1/2"1/4
    		-40 to 140-40 to 140Acetylene
    Air
    Carbon Dioxide
    Oxygen    		±2% Midscale (Grade B)0 to 30 psi, 0 to 60 psi, 0 to 100 psi, 0 to 200 psi, 0 to 400 psi, 0 to 600 psi, 0 to 1,000 psi, 0 to 2,000 psi, 0 to 3,000 psi, 0 to 4,000 psi32255K600000
     

    Low-Pressure Differential Gauges with Color Indicator

    A band of green, yellow, and red provides a clear indication of changes in differential pressure. Gauges are commonly used to indicate clogged filters.
    Glass-Filled Nylon Case with Anodized Aluminum Connections (Pounds per Square Inch)
    Image of Product. Front orientation. Differential Pressure Gauges. Low-Pressure Differential Gauges with Color Indicator.
    Pressure Range, psi
    Green
    Band
    Yellow Band
    Red Band
    Max. Pressure,
    psi
    Environment
    Temp. Range, ° F
    Process Temp.
    Range, ° F
    Ht.
    Wd.
    Dp.
    Case
    Color
    For Use With
    Accuracy
    Each
    1/4 NPT Female Threaded Pipe Connection
    0 to 22 to 2.52.5 to 3.5300-40 to 200-40 to 2003 1/4"3 1/4"1 1/2"BlackAir, Water, Hydraulic Fluid, Carbon Dioxide, Nitrogen, Hydrogen, Argon, Acetylene±5%2238K210000000
    0 to 33 to 4.54.5 to 5300-40 to 200-40 to 2003 1/4"3 1/4"1 1/2"BlackAir, Water, Hydraulic Fluid, Carbon Dioxide, Nitrogen, Hydrogen, Argon, Acetylene±5%2238K22000000
    0 to 66 to 99 to 12300-40 to 200-40 to 2003 1/4"3 1/4"1 1/2"BlackAir, Water, Hydraulic Fluid, Carbon Dioxide, Nitrogen, Hydrogen, Argon, Acetylene±5%2238K24000000
    0 to 7.57.5 to 1212 to 15300-40 to 200-40 to 2003 1/4"3 1/4"1 1/2"BlackAir, Water, Hydraulic Fluid, Carbon Dioxide, Nitrogen, Hydrogen, Argon, Acetylene±5%2238K25000000
    0 to 1313 to 2020 to 30300-40 to 200-40 to 2003 1/4"3 1/4"1 1/2"BlackAir, Water, Hydraulic Fluid, Carbon Dioxide, Nitrogen, Hydrogen, Argon, Acetylene±5%2238K27000000
    0 to 19.519.5 to 29.529.5 to 43300-40 to 200-40 to 2003 1/4"3 1/4"1 1/2"BlackAir, Water, Hydraulic Fluid, Carbon Dioxide, Nitrogen, Hydrogen, Argon, Acetylene±5%2238K28000000
     

    Gauge Guards

    Also known as isolators or diaphragm seals, these protect gauges from corrosive process media. Fill guards with hydraulic oil (not included) before use.
    316 Stainless Steel Body
    Image of Product. Bottom orientation. 316 Stainless Steel Body. Gauge Guards.
    316 stainless steel guards provide excellent corrosion and chemical resistance and can handle higher temperatures and pressures than plastic guards.
    Pipe
    Connections
    Inlet
    Outlet
    Gasket Material
    For Use With
    Min. Pressure,
    psi
    Max. Pressure
    @ Temp.
    Max. Temp.,
    ° F
    Ht.
    Each
    1/4 NPT Female1/4 NPT Female316 Stainless Steel
    		Acetylene, Air, Ammonia, Argon, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Sodium Hypochlorite (Bleach), Steam, Water602,500 psi @ 72° F3001 3/4"3882K510000000
    1/2 NPT Female1/4 NPT Female316 Stainless Steel
    		Acetylene, Air, Ammonia, Argon, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Sodium Hypochlorite (Bleach), Steam, Water602,500 psi @ 72° F3001 3/4"3882K52000000
    1/2 NPT Female1/2 NPT Female316 Stainless Steel
    		Acetylene, Air, Ammonia, Argon, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Sodium Hypochlorite (Bleach), Steam, Water602,500 psi @ 72° F3001 1/2"3882K53000000
    316 Stainless Steel Body with 1/4 NPT Female Drain Port
    Image of Product. Front orientation. 316 Stainless Steel Body. Gauge Guards, 1/4 NPT Female Drain Port.
    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.
    Pipe
    Connections
    Inlet
    Outlet
    Gasket Material
    For Use With
    Min. Pressure,
    psi
    Max. Pressure
    @ Temp.
    Max. Temp.,
    ° F
    Ht.
    Each
    1/4 NPT Female1/4 NPT Female316 Stainless Steel
    		Acetylene, Air, Ammonia, Argon, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Sodium Hypochlorite (Bleach), Steam, Water602,500 psi @ 72° F3002"3882K540000000
    1/2 NPT Female1/4 NPT Female316 Stainless Steel
    		Acetylene, Air, Ammonia, Argon, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Sodium Hypochlorite (Bleach), Steam, Water602,500 psi @ 72° F3002"3882K55000000
    1/2 NPT Female1/2 NPT Female316 Stainless Steel
    		Acetylene, Air, Ammonia, Argon, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Sodium Hypochlorite (Bleach), Steam, Water602,500 psi @ 72° F3002"3882K56000000

    Sanitary Gauge Guards

    Keeping corrosive substances from touching pressure gauges used in food-processing and pharmaceutical plants, these guards have a sanitary design. Made of 316 stainless steel, they won’t rust from frequent washdowns with harsh cleaners and sanitizers. They have continuously-welded seams and polished surfaces, so there aren’t any pits for bacteria to grow in. Removing them for cleaning and maintenance is easy thanks to their quick-clamp connection, which is sometimes called a tri-clamp.
    Also known as isolators and diaphragm seals, these guards have a 316 stainless steel gasket to shield the pressure gauges from corrosion. Before use, fill the guards with fluid such as glycerin or silicone that’s suitable for food contact.
    316 Stainless Steel Body
    Image of Product. Front orientation. Gauge Guards. Sanitary Gauge Guards.
    Outlet Quick-Clamp
    Tube Connection
    Inlet Pipe
    Connection
    For Tube
    OD
    Flange
    OD
    Gasket Material
    For Use With
    Min. Pressure,
    psi
    Max. Pressure
    @ Temp.
    Max.
    Temp.
    Ht.
    Interior Smoothness,
    Ra
    Each
    1/4 NPT Female1 1/2"1.984"316 Stainless Steel
    		Acetylene, Air, Ammonia, Beverage, Boric Acid, Carbon Dioxide, Diesel Fuel, Ethanol, Food, Gasoline, Hydraulic Fluid, Hydrogen, Oxygen, Pharmaceuticals, Wastewater, Water30Not RatedNot Rated1 3/8"326363N110000000
    1/4 NPT Female2"2.516"316 Stainless Steel
    		Acetylene, Air, Ammonia, Beverage, Boric Acid, Carbon Dioxide, Diesel Fuel, Ethanol, Food, Gasoline, Hydraulic Fluid, Hydrogen, Oxygen, Pharmaceuticals, Wastewater, Water30Not RatedNot Rated1 1/8"326363N12000000
    1/2 NPT Female1 1/2"1.984"316 Stainless Steel
    		Acetylene, Air, Ammonia, Beverage, Boric Acid, Carbon Dioxide, Diesel Fuel, Ethanol, Food, Gasoline, Hydraulic Fluid, Hydrogen, Oxygen, Pharmaceuticals, Wastewater, Water30Not RatedNot Rated1 3/8"326363N13000000

    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.
    316 Stainless Steel Connections (Inches of Water)
    Image of Product. Front orientation. Differential Pressure Gauges. Low-Pressure Differential Gauges with U-Tube, 316 Stainless Steel Connection.
    Environment
    Temperature Change, ° F
    Process
    Temperature Range, ° F
    Mounting
    Pressure,
    in. H₂O
    Pressure Scale
    Range
    Pressure Numeric
    Increments, in. H₂O
    Graduations,
    in. H₂O
    Max. Pressure,
    psi
    Ht.
    Min.
    Max.
    Min.
    Max.
    Mount
    Type
    Fasteners
    Included
    Hole
    Dia.
    No.
    of
    For Use With
    Accuracy
    Each
    1/4 NPT Female Threaded Pipe Connection
    0 to 105-0-5 In. of H₂O10.125014"3515035250Screw OnNo3/16"4Air, Carbon Dioxide, Argon, Acetylene, SteamNot Rated4044K320000000
    0 to 157-0-7 In. of H₂O10.125018"3515035250Screw OnNo3/16"4Air, Carbon Dioxide, Argon, Acetylene, SteamNot Rated4044K33000000
     

    Pressure-Regulating Valves for Fuel Gases

    Image of Product. With Knob. Front orientation. Pressure-Regulating Valves. Pressure-Regulating Valves for Fuel Gases, Female Inlet, Brass Body, Outlet-Pressure-Adjustment Knob.

    With Knob

    Install these valves directly in gas distribution pipelines for acetylene, hydrogen, or propane. They automatically reduce a high inlet pressure to a lower, stable outlet pressure. Valves have two outlets to fit various pipe configurations and come with a plug to close the unused outlet. The gauge monitors outlet pressure. All valves are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate.
    Choose a valve with a maximum outlet pressure that’s approximately twice your application’s normal operating pressure. Your operating pressure should never exceed 75% of the valve’s maximum outlet pressure.
    Inlet
    Outlet
    Lg.
    For Use
    With
    Pipe
    Size
    Location
    Max. Pressure,
    psi
    Pipe
    Size
    Location
    Pressure Adjustment
    Method
    Pressure Gauge Measurement
    Range, psi
    Temp. Range,
    ° F
    End-to-End
    Port-to-Port
    Each
    NPT Female
     
    Brass Body—Stainless Steel Diaphragm and Neoprene Seal
    Acetylene1/4
    		Side3501/4
    		Bottom, SideKnob0 to 30-20 to 1203.600"1.32"7864A140000000
     

    Tank-Mount Pressure-Regulating Valves for Fuel Gases

    Attach these valves to acetylene, hydrogen, methane, propane, or propylene tanks to reduce a high inlet pressure to a lower, stable outlet pressure. They have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves come with a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank.
    Choose a valve with a maximum outlet pressure that’s approximately twice your application’s normal operating pressure. Your operating pressure should never exceed 75% of the valve’s maximum outlet pressure.
    Single Stage
    Image of Product. Male Outlet × Female Inlet Single-Stage Valve With T-Handle. Front orientation. Pressure-Regulating Valves. Tank-Mount Pressure-Regulating Valves for Fuel Gases, Single Stage, Female Inlet, Male Outlet, UNF Outlet Thread, Outlet-Pressure-Adjustment T-Handle.
    Image of Product. Male Outlet × Female Inlet Single-Stage Valve With Knob. Front orientation. Pressure-Regulating Valves. Tank-Mount Pressure-Regulating Valves for Fuel Gases, Single Stage, Female Inlet, Male Outlet, UNF Outlet Thread, Outlet-Pressure-Adjustment Knob.
    Image of Product. Male Outlet × Male Inlet Single-Stage Valve With T-Handle. Front orientation. Pressure-Regulating Valves. Tank-Mount Pressure-Regulating Valves for Fuel Gases, Single Stage, Male Inlet, UNF Outlet Thread, Male Outlet, Outlet-Pressure-Adjustment T-Handle.
    Image of Product. Male Outlet × Male Inlet Single-Stage Valve With Knob. Front orientation. Pressure-Regulating Valves. Tank-Mount Pressure-Regulating Valves for Fuel Gases, Single Stage, Male Inlet, UNF Outlet Thread, Male Outlet, Outlet-Pressure-Adjustment Knob.

    Male Outlet × Female

    Inlet Single-Stage Valve

    With T-Handle

    Male Outlet × Female

    Inlet Single-Stage

    Valve With Knob

    Male Outlet × Male Inlet

    Single-Stage Valve With

    T-Handle

    Male Outlet × Male Inlet

    Single-Stage Valve With

    Knob

    Single-stage valves reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank. They’re best for applications where a constant outlet pressure isn’t critical.
    Brass Body—Valves with a brass body have a longer service life than valves with a brass and steel body.
    Stainless Steel Diaphragm—Valves with a stainless steel diaphragm can withstand harsh environments.
    Inlet
    Outlet
    Material
    CGA
    No.
    Location
    Thread
    Direction
    Pressure Gauge
    Reading Range, psi
    Thread
    Size
    Location
    Thread
    Direction
    Pressure
    Range, psi
    Pressure Adjustment
    Method
    Body
    Seal
    Diaphragm
    Temp. Range,
    ° F
    Each
    For Acetylene
     
    UNF Male Outlet × NGO Female Inlet
    300
    		SideRight Hand
    		0 to 4009/16"-18
    		SideLeft Hand
    		0 to 15T-HandleBrassPTFERubber-20 to 1207897A20000000
    300
    		SideRight Hand
    		0 to 4009/16"-18
    		SideLeft Hand
    		0 to 15KnobBrass/SteelPTFERubber-20 to 1207897A62000000
     
    UNF Male Outlet × NGO Male Inlet
    510
    		SideLeft Hand
    		0 to 4009/16"-18
    		SideLeft Hand
    		0 to 15T-HandleBrassPTFERubber-20 to 1207897A7000000
    510
    		SideLeft Hand
    		0 to 4009/16"-18
    		SideLeft Hand
    		0 to 15T-HandleBrassPTFEStainless Steel-20 to 1207897A53000000
    510
    		SideLeft Hand
    		0 to 4009/16"-18
    		SideLeft Hand
    		0 to 15KnobBrass/SteelPTFERubber-20 to 1207897A63000000
     
    Two Stage
    Image of Product. Male Outlet × Female Inlet Two-Stage Valve With T-Handle. Front orientation. Pressure-Regulating Valves. Tank-Mount Pressure-Regulating Valves for Fuel Gases, Two Stage, Female Inlet, Male Outlet, UNF Outlet Thread, Outlet-Pressure-Adjustment T-Handle.
    Image of Product. Male Outlet × Male Inlet Two-Stage Valve With T-Handle. Front orientation. Pressure-Regulating Valves. Tank-Mount Pressure-Regulating Valves for Fuel Gases, Two Stage, Male Inlet, UNF Outlet Thread, Male Outlet, Outlet-Pressure-Adjustment T-Handle.

    Male Outlet × Female

    Inlet Two-Stage Valve

    With T-Handle

    Male Outlet × Male

    Inlet Two-Stage Valve

    With T-Handle

    Two-stage valves progressively reduce pressure over two steps for more consistent outlet pressure at all times. They’re often used in applications that require a constant outlet pressure regardless of the tank level.
    Brass Body—Valves with a brass body have a longer service life than valves with a brass and steel body.
    Inlet
    Outlet
    Material
    CGA
    No.
    Location
    Thread
    Direction
    Pressure Gauge
    Reading Range, psi
    Thread
    Size
    Location
    Thread
    Direction
    Pressure
    Range, psi
    Pressure Adjustment
    Method
    Body
    Seal
    Diaphragm
    Temp. Range,
    ° F
    Each
    For Acetylene
     
    UNF Male Outlet × NGO Female Inlet
    300
    		SideRight Hand
    		0 to 4009/16"-18
    		SideLeft Hand
    		0 to 15T-HandleBrass/SteelPTFERubber-20 to 1207897A40000000
     
    UNF Male Outlet × NGO Male Inlet
    510
    		SideLeft Hand
    		0 to 4009/16"-18
    		SideLeft Hand
    		0 to 15T-HandleBrass/SteelPTFERubber-20 to 1207897A14000000
     
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