How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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About On/Off Valves
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About Precision Flow-Adjustment Valves
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Tight-Seal Plastic Barbed Tube Fittings for Air and Water
Minimize leaks in your line—these fittings have a single barb that creates a smooth clamping surface for extra-tight connections. Fittings are nylon for excellent impact and abrasion resistance.
For technical drawings and 3-D models, click on a part number.
- Temperature Range: See table
- Tubing: Use with firm (Durometer 75A-80A) polyurethane rubber or PVC plastic
- Clarity: Black: Opaque; White: Semi-Clear
Tight-Seal Moisture-Resistant Plastic Barbed Tube Fittings for Air and Water
- Temperature Range: -20° to 280° F
- Tubing: Use with firm or soft (Durometer 50A-90A) polyurethane rubber or PVC plastic
- Specifications Met: FDA Compliant 21 CFR 177.2470
Fittings have a single barb that creates a smooth clamping surface for extra-tight connections that minimize leaks. Made of acetal, they won’t absorb water and lose strength, even in high-humidity environments.
For technical drawings and 3-D models, click on a part number.
For Tube ID | Thread Size | Material | Color | Clarity | Max. Pressure | Each | |
UNF Threads | |||||||
---|---|---|---|---|---|---|---|
1/16" | 10-32 | Acetal Plastic | White | Semi-Clear | Not Rated | 0000000 | 00000 |
1/8" | 10-32 | Acetal Plastic | White | Semi-Clear | Not Rated | 0000000 | 0000 |
1/8" | 1/4"-28 | Acetal Plastic | White | Semi-Clear | Not Rated | 00000000 | 0000 |
3/16" | 1/4"-28 | Acetal Plastic | White | Semi-Clear | Not Rated | 00000000 | 0000 |
Fast-Acting Panel-Mount Threaded On/Off Valves
Open and close these valves with the flip of the toggle switch. Commonly used for equipment testing and gas sampling, they have threads and a hex nut below the handle for installation in instrument panels.
Manual-return valves remain open or closed when the toggle is moved into position.
Spring-return valves automatically close when the toggle is released.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Stem
- For Use With:
Buna-N Rubber Seal: Water, Oil, Air
All Other Valves: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon
Pipe Size | Thread Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Toggle Switch Type | Port-to-Port Lg. | Panel Cutout Dia. | Each | |
Brass Body—Buna-N Rubber Seal | |||||||||
---|---|---|---|---|---|---|---|---|---|
NPT Male × UNF Female | |||||||||
1/8 | 10-32 | 7.3 | 150 psi @ 70° F | 35° to 230° | Manual Return | 5/16" | 15/32" | 0000000 | 000000 |
1/8 | 10-32 | 8 | 150 psi @ 70° F | 35° to 230° | Manual Return | 5/16" | 15/32" | 0000000 | 00000 |
1/8 | 10-32 | 8 | 150 psi @ 70° F | 35° to 230° | Spring Return | 5/16" | 15/32" | 0000000 | 00000 |
UNF Female × UNF Female | |||||||||
__ | 10-32 | 6.8 | 150 psi @ 70° F | 35° to 230° | Spring Return | 5/16" | 15/32" | 0000000 | 00000 |
__ | 10-32 | 7.3 | 150 psi @ 70° F | 35° to 230° | Manual Return | 5/16" | 15/32" | 0000000 | 00000 |
Fast-Acting Compact Threaded On/Off Valves
Compact
Push Button
Often used in testing and sampling applications, these valves open and close with the push of a button. They’re also known as push-button valves and are designed for installation in tight spots.
Normally open valves close when the button is pushed and spring open when the button is released.
Normally closed valves open when the button is pushed and spring closed when the button is released.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Stem
- For Use With: Air, Oil, Water
- Seal Material: Buna-N Rubber
Compact Push Button | Mushroom Push Button | |||||||
---|---|---|---|---|---|---|---|---|
Thread Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Port-to-Port Lg. | Each | Each | ||
Normally Open | ||||||||
UNF Female × UNF Female | ||||||||
10-32 | 0.18 | 150 psi @ 180° F | 35° to 230° | 5/16" | 000000 | 00 | 0000000 | 000000 |
Normally Closed | ||||||||
UNF Female × UNF Female | ||||||||
10-32 | 0.12 | 300 psi @ 180° F | 35° to 230° | 5/16" | 0000000 | 000000 | 0000000 | 00000 |
Threaded Precision Flow-Adjustment Valves
Also known as needle valves, these adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Turn the handle to adjust flow. All valves have metal-to-metal seats that resist temperature fluctuations.
303 stainless steel valves are more corrosion resistant than brass and steel valves.
316 stainless steel valves have the best corrosion resistance.
Valves with packing have a nut that can be tightened to compress the packing if it leaks.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Needle
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon
Thread Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Packing Material | Port-to-Port Lg. | Each | |
303 Stainless Steel Body with Knob Handle | |||||||
---|---|---|---|---|---|---|---|
10-32 | 0.02 | 300 psi @ 70° F | 0° to 430° | Fluoroelastomer Rubber | 5/16" | 00000000 | 000000 |
316 Stainless Steel Body with Knob Handle | |||||||
10-32 | 0.02 | 300 psi @ 70° F | 0° to 430° | Fluoroelastomer Rubber | 5/16" | 00000000 | 00000 |
Grease Fitting Adapters
When the size or thread type of a fitting doesn't match an existing opening, use these adapters to make the connection.
Zinc-plated steel adapters have mild corrosion resistance. SAE-LT threads are tapered but designed to be installed into a 1/4"-28 straight-thread UNF hole.
For technical drawings and 3-D models, click on a part number.
Connection | |||||
---|---|---|---|---|---|
Male | Female | Material | Pkg. Qty. | Pkg. | |
Adapters | |||||
SAE-LT 1/4"-28 | UNF 1/4"-28 | Zinc-Plated Steel | 5 | 0000000 | 00000 |