Pressure Gauges for Salt Water

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19 Products

About Pressure Gauges

About Pipe Size

Bottom Connection (Flange Mount)

Lower Back Connection (Flange Mount)

Bottom Connection (Flange Mount)

Lower Back Connection (Flange Mount)

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.

Aluminum Case with 316 Stainless Steel Connection—Single Scale (psi)

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

With PVC Guard

With CPVC Guard

With Polypropylene Guard

Bottom Connection (Plastic Guard)

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.

Painted Steel Case with PVC Plastic Connection—Dual Scale (psi, kg/cm²)

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

							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 140°	40° to 140°	Black	PVC Plastic	Gray	0000000	0000000
2"	1/2	40° to 140°	40° to 140°	Black	PVC Plastic	Gray	0000000	000000

Painted Steel Case with CPVC Plastic Connection—Dual Scale (psi, kg/cm²)

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

							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 190°	40° to 190°	Black	CPVC Plastic	Gray	0000000	0000000
2"	1/2	40° to 190°	40° to 190°	Black	CPVC Plastic	Gray	0000000	000000

Painted Steel Case with Polypropylene Plastic Connection—Dual Scale (psi, kg/cm²)

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

Gauge Guards

316 Stainless Steel Guard

316 Stainless Steel Guard With Drain Port

Plastic Guard

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
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

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About Pressure Gauges

About Pipe Size

Extreme Vibration-Resistant Pressure Gauges

Low-Pressure Gauges for Chemicals

Gauge Guards