About On/Off Valves
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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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Luer Lock Couplings for Stainless Steel Tubing
- For Use With: Air
- Temperature Range: -75° to 400° F
- Tubing: Use with 304/304L or 316/316L Stainless Steel
Quickly connect low-pressure stainless steel lines with these couplings. Made of 316 stainless steel, they have excellent corrosion resistance. They’re easier to install than yor-lok or compression couplings—just insert tubing and twist the nut to seal—but they can’t handle as much pressure. Luer lock connections are universal, so you can connect any plug and socket to each other, regardless of the pipe or tube size. You can also connect them to syringes and needles. These couplings are open-flow style, so there is no shut-off valve to stop the flow when the coupling is separated. They have a compact body for installation in tight spaces.
Note: For a complete coupling, order a plug and a socket.
Stainless Steel Luer Lock Tube Couplings for Air and Water
Use these luer lock couplings to quickly connect low-pressure air and water lines. Made of stainless steel, they’re more durable than plastic couplings. Luer lock connections are universal, so you can connect any plug and socket to each other, regardless of the pipe or tube size. You can also connect them to syringes and needles. These couplings have a compact body, so they’ll fit in tight spaces. All are open-flow style, so there is no shut-off valve to stop the flow when the coupling is separated.
303 stainless steel couplings have very good corrosion resistance.
316 stainless steel couplings have excellent corrosion resistance.
Note: For a complete coupling, order a plug and a socket.
- Temperature Range: 32° to 300° F
- Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber
Barbed plugs and sockets insert into tubing and secure with a clamp.
- Temperature Range: 32° to 300° F
- Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber
Barbed plugs and sockets insert into tubing and secure with a clamp.
- Temperature Range: 32° to 300° F
Pipe Size | Thread Size | Max. Pressure | Each | |
NPT Threads | ||||
|---|---|---|---|---|
316 Stainless Steel | ||||
| 1/8 | __ | 30 psi @ 72° F | 0000000 | 000000 |
| 1/4 | __ | 30 psi @ 72° F | 0000000 | 00000 |
UN/UNF (SAE Straight) Threads | ||||
303 Stainless Steel | ||||
| __ | 1/4"-28 | 30 psi @ 72° F | 0000000 | 00000 |
316 Stainless Steel | ||||
| __ | 10-32 | 30 psi @ 72° F | 0000000 | 00000 |
| __ | 1/4"-28 | 30 psi @ 72° F | 0000000 | 00000 |
- Temperature Range: 32° to 300° F
| Thread Size | Max. Pressure | Each | |
UN/UNF (SAE Straight) Threads | |||
|---|---|---|---|
316 Stainless Steel | |||
| 10-32 | 45 psi @ 72° F | 0000000 | 000000 |
- Temperature Range: 32° to 300° F
| Max. Pressure | Each | |
316 Stainless Steel | ||
|---|---|---|
| 45 psi @ 72° F | 0000000 | 0000000 |
- Temperature Range: 32° to 300° F
| Max. Pressure | Each | |
316 Stainless Steel | ||
|---|---|---|
| 45 psi @ 72° F | 0000000 | 0000000 |
- Temperature Range: 32° to 300° F
- Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber
Barbed plugs and sockets insert into tubing and secure with a clamp.
- Temperature Range: 32° to 300° F
- Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber
Barbed plugs and sockets insert into tubing and secure with a clamp.
- Temperature Range: 32° to 300° F
| Pipe Size | Thread Size | Max. Pressure | Each | |
NPT Threads | ||||
|---|---|---|---|---|
316 Stainless Steel | ||||
| 1/8 | __ | 30 psi @ 72° F | 0000000 | 000000 |
| 1/4 | __ | 30 psi @ 72° F | 0000000 | 00000 |
UN/UNF (SAE Straight) Threads | ||||
303 Stainless Steel | ||||
| __ | 1/4"-28 | 30 psi @ 72° F | 0000000 | 00000 |
316 Stainless Steel | ||||
| __ | 10-32 | 30 psi @ 72° F | 0000000 | 00000 |
| __ | 1/4"-28 | 30 psi @ 72° F | 0000000 | 00000 |
- Temperature Range: 32° to 300° F
| Pipe Size | Thread Size | Thread Pitch, mm | Max. Pressure | Each | |
NPT Threads | |||||
|---|---|---|---|---|---|
316 Stainless Steel | |||||
| 1/8 | __ | __ | 45 psi @ 72° F | 0000000 | 000000 |
| 1/4 | __ | __ | 45 psi @ 72° F | 0000000 | 00000 |
Metric Threads | |||||
303 Stainless Steel | |||||
| __ | M6 | 1 | 30 psi @ 72° F | 0000000 | 00000 |
316 Stainless Steel | |||||
| __ | M6 | 1 | 30 psi @ 72° F | 0000000 | 00000 |
UN/UNF (SAE Straight) Threads | |||||
316 Stainless Steel | |||||
| __ | 10-32 | __ | 45 psi @ 72° F | 0000000 | 00000 |
| __ | 1/4"-28 | __ | 45 psi @ 72° F | 0000000 | 00000 |
- Temperature Range: 32° to 300° F
| Thread Size | Max. Pressure | Each | |
UN/UNF (SAE Straight) Threads | |||
|---|---|---|---|
316 Stainless Steel | |||
| 10-32 | 45 psi @ 72° F | 0000000 | 000000 |
- Temperature Range: 32° to 300° F
| Max. Pressure | Each | |
316 Stainless Steel | ||
|---|---|---|
| 45 psi @ 72° F | 0000000 | 000000 |
- Temperature Range: 32° to 300° F
| Max. Pressure | Each | |
316 Stainless Steel | ||
|---|---|---|
| 30 psi @ 72° F | 0000000 | 000000 |
On/Off Valves with Luer Lock Fittings
With just a half turn or a light push, these valves connect to luer lock fittings on your line. Their universal connection size fits any luer lock plug or socket.
303 stainless steel valves have the best corrosion resistance.
Connections with a locking ring are more secure than those without a locking ring, so they’re better for high pressures. Give the ring a half turn to lock them in place. You can’t remove the locking ring.
- Valve Type: Stop Cock
- For Use With: Water
| Max. Pressure | End-to-End Lg. | Each | |
Luer Lock Male with Locking Ring × Luer Lock Female | |||
|---|---|---|---|
| 4.5 psi @ 70° F | 1 3/8" | 0000000 | 0000000 |