McMaster-Carr

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	Connection Location Connection Location

	Bottom		Center Back

	Pipe Size Pipe Size

	Thread Type Thread Type	Show

BSPP

	Thread Type Thread Type	Hide

	Scale Scale

bar

psi

	For Use With For Use With

	Maximum Pressure, psi Maximum Pressure, psi

	Dial Type Dial Type

	Liquid Filled

	Measures Measures

Pressure

	Dial Diameter Dial Diameter

2 1/2"

	Case Material Case Material

Stainless Steel

	Scale Type Scale Type

	Dual

	Connection Type Connection Type

	Pipe

	Connection Material Connection Material

Brass

	Display Type Display Type

	Dial

	Liquid Type Liquid Type

Glycerin

	Connection Style Connection Style

	Threaded

	Minimum Environment Temperature Minimum Environment Temperature

0° F

	Maximum Environment Temperature Maximum Environment Temperature

140° F

	Minimum Process Temperature Minimum Process Temperature

0° F

	Gender Gender

Male

	Maximum Process Temperature Maximum Process Temperature

140° F

	Accuracy Scale Accuracy Scale

Full Scale

	Lens Material Lens Material

Plastic

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30 Products

About Pressure Gauges

About Pipe Size

Center Back Connection

Bottom Connection

A liquid-filled dial reduces needle flutter for precise readings in high-vibration applications. Gauges are commonly used with pumps, filters, regulators, and in process lines to measure and display pressure.

Gauges with 304 stainless steel case and ABS plastic case have better corrosion resistance than gauges with brass case.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with Brass Connection—Dual Scale (psi, bar)

For Use With: Air, Water, Hydraulic Fluid, Carbon Dioxide, and Natural Gas
Accuracy: ±1.5% Full Scale (Not Graded)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	bar	psi	bar	psi	bar
BSPP Male
0 to 14.4	0 to 1	0.4	0.02	4	0.2
0 to 22.8	0 to 1.6	0.6	0.04	6	0.4
0 to 36	0 to 2.5	1	0.05	10	0.5
0 to 57.6	0 to 4	1.6	0.1	16	1
0 to 86	0 to 6	2	0.1	20	1
0 to 144	0 to 10	4	0.2	40	2
0 to 228	0 to 16	6	0.4	60	4
0 to 360	0 to 25	10	0.5	100	5
0 to 576	0 to 40	16	1	160	10
0 to 860	0 to 60	20	1	200	10
0 to 1,440	0 to 100	40	2	400	20
0 to 2,280	0 to 160	60	4	600	40
0 to 3,600	0 to 250	100	5	1,000	50
0 to 5,800	0 to 400	160	10	1,600	100
0 to 8,600	0 to 600	200	10	2,000	100

Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Liquid Type		Each
BSPP Male
2 1/2"	1/4	0° to 140°	0° to 140°	Glycerin	0000000	000000
Center Back Connection
BSPP Male
2 1/2"	1/4	0° to 140°	0° to 140°	Glycerin	0000000	00000

Sights

BSPP Threads For Clear Liquid

BSPP Threads For Dark Liquid

These sights have a glass window. Screw them into threaded holes on tanks, gear cases, bearing housings, and mixers to see inside.

Sights with BSPP (British Standard Pipe Parallel) threads are often used with imported equipment.

Sights for dark liquid have a reflector that makes liquid easy to see, especially in low-light conditions.

Aluminum sights have good corrosion resistance.

303 stainless steel sights are more corrosion resistant than brass, steel, and aluminum sights.

				Temp. Range, °F
Pipe Size	Window Dia.	Hex Size	Max. Pressure	Min.	Max.	For Use With	Window Material	Seal Material		Each
For Clear Liquid
Brass
BSPP Male Thread
3/8	3/8"	3/4"	725 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	000000	000000
1/2	1/2"	7/8"	725 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	000000	00000
3/4	5/8"	1 1/8"	360 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	000000	00000
1	1"	1 3/8"	290 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	000000	00000
Aluminum
BSPP Male Thread
3/8	3/8"	3/4"	725 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000
1/2	1/2"	7/8"	725 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000
3/4	5/8"	1 1/8"	360 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000
1	1"	1 3/8"	290 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000
1 1/4	1 1/4"	1 3/4"	180 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000
303 Stainless Steel
BSPP Male Thread
3/8	3/8"	3/4"	725 psi @ 70° F	0°	350°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Fluoroelastomer Rubber	000000	00000
1/2	1/2"	7/8"	725 psi @ 70° F	0°	350°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Fluoroelastomer Rubber	000000	00000
3/4	5/8"	1 1/8"	360 psi @ 70° F	0°	350°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Fluoroelastomer Rubber	000000	00000
1	1"	1 3/8"	290 psi @ 70° F	0°	350°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Fluoroelastomer Rubber	000000	00000
For Dark Liquid
Brass
BSPP Male Thread
3/8	3/8"	3/4"	725 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	000000	00000
1/2	1/2"	7/8"	725 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	000000	00000
3/4	5/8"	1 1/8"	360 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	000000	00000
1	1"	1 3/8"	290 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	000000	00000
Aluminum
BSPP Male Thread
3/8	3/8"	3/4"	725 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000
1/2	1/2"	7/8"	725 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000
3/4	5/8"	1 1/8"	360 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000
1	1"	1 3/8"	290 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000
1 1/4	1 1/4"	1 3/4"	180 psi @ 70° F	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Glass	Buna-N Rubber	0000000	00000

Shatter-Resistant Sights

The window and body are made from a single piece of plastic, making these sights more shatter resistant than sights with a glass window. They are not rated for pressure.

				Temp. Range, °F
Pipe Size	Window Dia.	Hex Size	Max. Pressure	Min.	Max.	For Use With	Window Material	Seal Material		Each
Plastic
BSPP Male Thread
1/4	3/8"	5/8"	Not Rated	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Plastic	Buna-N Rubber	0000000	00000
3/8	3/8"	3/4"	Not Rated	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Plastic	Buna-N Rubber	0000000	0000
1/2	1/2"	7/8"	Not Rated	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Plastic	Buna-N Rubber	0000000	0000
3/4	3/4"	1"	Not Rated	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Plastic	Buna-N Rubber	0000000	0000
1	1"	1 3/8"	Not Rated	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Plastic	Buna-N Rubber	0000000	0000
1 1/4	1 1/8"	1 5/8"	Not Rated	-20°	210°	Water, Hydraulic Fluid, Diesel Fuel	Plastic	Buna-N Rubber	0000000	0000

Terms and Conditions and Privacy Policy

About Pressure Gauges

About Pipe Size

Vibration-Resistant Pressure Gauges

Sights

Shatter-Resistant Sights