About Precision Flow-Adjustment Valves
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Precision Flow-Adjustment Valves with Yor-Lok Fittings
- Valve Type: Needle
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon
For extra gripping power and a strong seal, these valves have Yor-Lok fittings with two sleeves that bite into tubing as you tighten the nut. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Valve body is 316 stainless steel for excellent corrosion resistance. Valves have metal-to-metal seats that resist temperature fluctuations. All 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.
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | End-to-End Lg. | Each | |
316 Stainless Steel Body  | ||||||
|---|---|---|---|---|---|---|
Yor Lok × Yor Lok | ||||||
| 1/8" | 0.09 | 5000 psi @ 200° F | -50° to 445° | 2" | 00000000 | 0000000 |
| 1/4" | 0.37 | 5000 psi @ 200° F | -50° to 445° | 2 5/16" | 00000000 | 00000 |
| 1/4" | 0.65 | 6000 psi @ 100° F | -65° to 700° | 2 3/4" | 00000000 | 000000 |
| 3/8" | 0.73 | 5000 psi @ 200° F | -50° to 445° | 2 5/8" | 00000000 | 000000 |
| 3/8" | 0.77 | 6000 psi @ 100° F | -65° to 700° | 3 3/16" | 00000000 | 000000 |
| 1/2" | 0.73 | 5000 psi @ 200° F | -50° to 445° | 2 13/16" | 00000000 | 000000 |
| 1/2" | 1.03 | 6000 psi @ 100° F | -65° to 700° | 3" | 00000000 | 000000 |
| 3/4" | 2.67 | 6000 psi @ 100° F | -65° to 700° | 3 15/16" | 00000000 | 000000 |
Precision Flow-Adjustment Valves with Compression Fittings
The compression sleeve on these valves bites into tubing as you tighten the nut, forming a strong seal. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. All have metal-to-metal seats that resist temperature fluctuations.
Valves with packing have a nut that can be tightened to compress the packing if it leaks.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Needle
- For Use With: Air
- Seal Material: Neoprene Rubber
Compact Precision Flow-Adjustment Valves with Barbed Fittings
- Valve Type: Needle
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon
- Seal Material: Buna-N Rubber
With a low-profile body and a narrow port-to-port length, these valves fit in tight spots. Barbs grip onto tubing, providing a secure hold. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Valves have metal-to-metal seats that resist temperature fluctuations.
Screwdriver-operated valves require a slotted screwdriver (not included) to open and close.
303 stainless steel valves are more corrosion resistant than nickel-plated brass valves.
For technical drawings and 3-D models, click on a part number.
Handle-Operated | Screwdriver-Operated | |||||||
|---|---|---|---|---|---|---|---|---|
| For Tube ID | Max. Pressure | Temperature Range, °F | Panel Cutout Dia. | Port-to-Port Lg. | Each | Each | ||
Nickel-Plated Brass Body | ||||||||
Barbed × Barbed | ||||||||
| 1/16" | 180 psi @ 150° F | -40° to 200° | 5/16" | 7/16" | 00000000 | 000000 | 00000000 | 000000 |
303 Stainless Steel Body | ||||||||
Barbed × Barbed | ||||||||
| 1/8" | 180 psi @ 150° F | -40° to 200° | 5/16" | 9/16" | 00000000 | 00000 | 00000000 | 00000 |
Precision Flow-Adjustment Valves with Barbed Fittings
- Valve Type: Needle
- For Use With: Water, Air, Argon, Helium, Krypton, Neon, Xenon
- Seal Material: EPDM Rubber
Barbs grip onto tubing, providing a secure hold. Turn the handle on these valves to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. All have a hex nut and threads below the handle for panel mounting.
For technical drawings and 3-D models, click on a part number.
| For Tube ID | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Panel Cutout Dia. | End-to-End Lg. | Each | |
Dark Gray PVC Plastic Body | |||||||
|---|---|---|---|---|---|---|---|
Barbed × Barbed | |||||||
| 1/4" | 0.3 | 125 psi @ 140° F | 35° to 140° | 7/8" | 3 3/8" | 0000000 | 000000 |
| 3/8" | 0.3 | 125 psi @ 140° F | 35° to 140° | 7/8" | 3 3/8" | 0000000 | 00000 |
| 1/2" | 0.4 | 125 psi @ 140° F | 35° to 140° | 7/8" | 3 3/8" | 0000000 | 00000 |
White Polypropylene Plastic Body | |||||||
Barbed × Barbed | |||||||
| 1/4" | 0.3 | 125 psi @ 140° F | 35° to 140° | 7/8" | 3 3/8" | 0000000 | 00000 |
| 3/8" | 0.3 | 125 psi @ 140° F | 35° to 140° | 7/8" | 3 3/8" | 0000000 | 00000 |
| 1/2" | 0.4 | 125 psi @ 140° F | 35° to 140° | 7/8" | 3 3/8" | 0000000 | 00000 |
| Optional Nickel-Plated Brass Mounting Nuts | 0000000 | Each | 00000 |
Precision Flow-Adjustment Valves with Push-to-Connect Fittings
- Valve Type: Needle
- For Use With: Water, Air, Argon, Helium, Krypton, Neon, Xenon
- Seal Material: EPDM Rubber
Insert tubing into the fittings on these valves—no heat, solder, or flux required. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. All valves have a hex nut and threads below the handle for mounting through instrument panels.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Panel Cutout Dia. | End-to-End Lg. | Each | |
Dark Gray PVC Plastic Body | |||||||
|---|---|---|---|---|---|---|---|
Push to Connect × Push to Connect | |||||||
| 1/4" | 0.3 | 125 psi @ 140° F | 35° to 140° | 7/8" | 2 13/16" | 0000000 | 000000 |
| 3/8" | 0.4 | 125 psi @ 140° F | 35° to 140° | 7/8" | 2 13/16" | 0000000 | 00000 |
White Polypropylene Plastic Body | |||||||
Push to Connect × Push to Connect | |||||||
| 1/4" | 0.3 | 125 psi @ 140° F | 35° to 140° | 7/8" | 2 13/16" | 0000000 | 00000 |
| 3/8" | 0.4 | 125 psi @ 140° F | 35° to 140° | 7/8" | 2 13/16" | 0000000 | 00000 |
| Optional Nickel-Plated Brass Mounting Nuts | 0000000 | Each | 00000 |
Precision Flow-Adjustment Valves with 45° Flared Compression Fittings
- Valve Type: Needle
- For Use With: Air
- Seal Material: Neoprene Rubber
With 45° flared tube fittings, these valves form a tight seal on metal tubing. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. All valves have metal-to-metal seats that resist temperature fluctuations.
For technical drawings and 3-D models, click on a part number.
Precision Flow-Adjustment Valves with Solder-Connect Fittings
- Valve Type: Needle
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Steam, Xenon
Solder these valves to tubing for a permanent, leak-tight connection. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Valves have a 316 stainless steel body for excellent corrosion resistance. All have metal-to-metal seats that resist temperature fluctuations. They 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.
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temperature Range, °F | End-to-End Lg. | Each | |
316 Stainless Steel Body | |||||||
|---|---|---|---|---|---|---|---|
Solder Connect × Solder Connect | |||||||
| 3/8" | 0.94 | 6000 psi @ 100° F | 4900 psi @ 700° F | -65° to 700° | 2 1/4" | 0000000 | 0000000 |
| 1/2" | 1.31 | 6000 psi @ 100° F | 4900 psi @ 700° F | -65° to 700° | 2 1/2" | 0000000 | 000000 |
Precision Flow-Adjustment Valves with
Sanitary Quick-Clamp Fittings for Clean Steam
- Valve Type: Needle
- For Use With: Air, Carbon Dioxide, Clean Liquids, Deionized Water, Nitrogen, Steam, Water
- Seal Material: PTFE Plastic
Often used in sterilization applications with clean steam, these valves are electropolished to a 16 Ra finish for smooth internal surfaces that prevent product buildup and inhibit bacteria growth. All have sanitary quick-clamp fittings for easy disassembly. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Valves have a 316L stainless steel body for excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Flange OD | Max. Pressure | Max. Temperature, °F | End-to-End Lg. | Interior Smoothness, Ra | Each | |
316L Stainless Steel Body | |||||||
|---|---|---|---|---|---|---|---|
Quick Clamp × Quick Clamp | |||||||
| 1/4" | 0.984" | 120 psi @ 300° F | 300° | 4" | 16 | 0000000 | 0000000 |
| 3/8" | 0.984" | 120 psi @ 300° F | 300° | 4" | 16 | 0000000 | 000000 |
| 1/2" | 0.984" | 120 psi @ 300° F | 300° | 4" | 16 | 0000000 | 000000 |
| 3/4" | 0.984" | 120 psi @ 300° F | 300° | 4" | 16 | 0000000 | 000000 |
| 1" | 1.984" | 120 psi @ 300° F | 300° | 4 1/2" | 16 | 0000000 | 000000 |
| 1 1/2" | 1.984" | 120 psi @ 300° F | 300° | 5 1/2" | 16 | 0000000 | 000000 |
| 2" | 2.516" | 120 psi @ 300° F | 300° | 6 1/4" | 16 | 0000000 | 000000 |
Precision Flow-Adjustment Valves with Yor-Lok Fittings for Steam
- Valve Type: Needle
- For Use With: Steam
- Seal Material: PTFE Plastic
For extra gripping power and a strong seal, these valves have Yor-Lok fittings with two sleeves that bite into tubing as you tighten the nut. They are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. These valves are often used in petroleum refineries. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Body is 316 stainless steel for excellent corrosion resistance. For installation in instrument panels, valves have threads and a hex nut below the handle. They have metal-to-metal seats that resist temperature fluctuations. All 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.
| For Tube ID | For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Panel Cutout Dia. | End-to-End Lg. | Each | |
316 Stainless Steel Body | ||||||||
|---|---|---|---|---|---|---|---|---|
Yor Lok × Yor Lok | ||||||||
| 1/16" | 1/4" | 0.6 | 10000 psi @ 200° F | 6200 psi @ 355° F | 7/8" | 2 7/8" | 0000000 | 0000000 |
| 1/16" | 3/8" | 0.6 | 10000 psi @ 200° F | 4800 psi @ 355° F | 7/8" | 2 7/8" | 0000000 | 000000 |
| 1/16" | 1/2" | 0.6 | 10000 psi @ 200° F | 4800 psi @ 355° F | 7/8" | 3 1/8" | 0000000 | 000000 |
Precision Flow-Adjustment Valves with Yor-Lok Fittings for Chemicals
- Valve Type: Needle
- For Use With: Oil, Acetone, Air, Ammonia, Argon, Butane, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Gasoline, Helium, Isopropyl Alcohol, Kerosene, Krypton, Methanol, Methyl Ethyl Ketone, Mineral Spirits, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Soap Solutions, Sodium Hydroxide, Toluene, Xenon, Xylene
- Seal Material: PTFE Plastic
- Seat Material: 316 Stainless Steel
- Packing Material: PTFE Plastic
- Needle Material: 316 Stainless Steel
For extra gripping power and a strong seal, these valves have Yor-Lok fittings with two sleeves that bite into tubing as you tighten the nut. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. The 316 stainless steel body, seal and needle, and the PTFE seat and packing can withstand aggressive and corrosive solutions in chemical-processing applications. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Threads and a hex nut below the handle allow you to mount these valves in instrument panels. All have a nut that can be tightened to compress the packing if it leaks. Valves have bubble-tight soft seats that provide a tight seal when the valve is completely closed.
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.
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Panel Cutout Dia. | End-to-End Lg. | Each | |
316 Stainless Steel Body | |||||||
|---|---|---|---|---|---|---|---|
Yor Lok × Yor Lok | |||||||
| 1/4" | 0.56 | 7000 psi @ 400° F | -20° to 400° | 0.87" | 2 7/8" | 0000000 | 0000000 |
| 3/8" | 0.56 | 7000 psi @ 400° F | -20° to 400° | 0.87" | 2 7/8" | 0000000 | 000000 |
| 1/2" | 0.56 | 7000 psi @ 400° F | -20° to 400° | 0.87" | 3 1/8" | 0000000 | 000000 |
Precision Flow-Adjustment Valves with Push-to-Connect Fittings for Chemicals
- Valve Type: Needle
- For Use With: Water, Oil, Air, Argon, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Gasoline, Helium, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Krypton, Methanol, Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Sulfuric Acid, Toluene, Xenon, Xylene
- Seal Material: Fluoroelastomer Rubber
- Packing Material: PTFE Plastic
- Needle Material: PVDF Plastic
Insert tubing into the fittings on these valves—no heat, solder, or flux required. With a fluoroelastomer seal and a PVDF body, they can withstand aggressive and corrosive solutions in chemical-processing applications. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Threads and a hex nut below the handle allow you to install these valves in instrument panels. They have a nut that can be tightened to compress the packing if it leaks.
For technical drawings and 3-D models, click on a part number.
Precision Flow-Adjustment Valves with Barbed Fittings for Chemicals
- Valve Type: Needle
- For Use With: Water, Oil, Air, Argon, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Gasoline, Helium, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Krypton, Methanol, Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Sulfuric Acid, Toluene, Xenon, Xylene
- Seal Material: PTFE Plastic
- Packing Material: PTFE Plastic
- Needle Material: PVDF Plastic
Barbs grip onto tubing, providing a secure hold. To withstand aggressive and corrosive solutions in chemical-processing applications, these valves have a PTFE seal and a PVDF body. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Threads and a hex nut below the handle allow you to install these valves in instrument panels. They have a nut that can be tightened to compress the packing if it leaks.
For technical drawings and 3-D models, click on a part number.
| For Tube ID | For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Max. Temperature, °F | Panel Cutout Dia. | End-to-End Lg. | Each | |
Black PVDF Plastic Body | ||||||||
|---|---|---|---|---|---|---|---|---|
Barbed × Barbed | ||||||||
| 1/4" | 3/8" | 0.3 | 125 psi @ 140° F | 140° | 7/8" | 3 5/16" | 0000000 | 000000 |
| 3/8" | 1/2" | 0.3 | 125 psi @ 140° F | 140° | 7/8" | 3 5/16" | 0000000 | 00000 |
| 1/2" | 5/8" | 0.4 | 125 psi @ 140° F | 140° | 7/8" | 3 5/16" | 0000000 | 00000 |
Precision Flow-Adjustment Valves with Barbed Fittings for Fuel
- Valve Type: Needle
- For Use With: See Table
- Seal Material: See Table
Add fine flow control to tubing lines for butane, diesel fuel, fuel oil, gasoline, kerosene, natural gas, and propane. These valves have a barbed fitting that grips onto tubing, providing a secure hold. Turn the handle to adjust flow in small increments. Valves have metal-to-metal seats that resist temperature fluctuations.
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.
| For Tube ID | Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Seal Material | Port-to-Port Lg. | For Use With | Each | |
Brass Body | |||||||||
|---|---|---|---|---|---|---|---|---|---|
NPTF Male × Barbed | |||||||||
| 3/8" | 3/8 | 1.5 | 200 psi @ 70° F | -10° to 400° | Buna-N Rubber | 1 1/8" | Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Propane | 00000000 | 000000 |
| 5/8" | 3/8 | 2.9 | 200 psi @ 70° F | -30° to 225° | Fluorocarbon Rubber | 1 5/16" | Oil, Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Propane | 00000000 | 00000 |
| 5/8" | 1/2 | 4.4 | 200 psi @ 70° F | -10° to 400° | Buna-N Rubber | 1 1/2" | Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Propane | 00000000 | 00000 |
| 3/4" | 1/2 | 5.5 | 200 psi @ 70° F | -10° to 400° | Fluorocarbon Rubber | 1 7/16" | Oil, Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Propane | 00000000 | 00000 |
Precision Flow-Adjustment Valves with
Push-to-Connect Fittings for Food and Beverage
- Valve Type: Needle
- For Use With: Food, Beverage
- Seal Material: Buna-N Rubber
Insert tubing into the fittings on these valves—no heat, solder, or flux required. Designed for use in food and beverage tubing lines, they adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Threads and a hex nut below the handle allow you to install these valves in instrument panels. They have a nut that can be tightened to compress the packing if it leaks.
For technical drawings and 3-D models, click on a part number.
Precision Flow-Adjustment Valves with Barbed Fittings for Food and Beverage
- Valve Type: Needle
- For Use With: Food, Beverage
- Seal Material: PTFE Plastic
These valves have barbed fittings that grip onto tubing, providing a secure hold. They’re often used in food and beverage tubing lines to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Threads and a hex nut below the handle allow you to install these valves in instrument panels. They have a nut that can be tightened to compress the packing if it leaks.
For technical drawings and 3-D models, click on a part number.