About Precision Flow-Adjustment Valves
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Plastic Threaded Precision Flow-Adjustment Valves
- Valve Type: Needle
- For Use With: Water, Air, Argon, Helium, Krypton, Neon, Xenon
- Seal Material: EPDM Rubber
Plastic provides a lightweight alternative to metal valves. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. These valves have a hex nut and threads below the handle for mounting through instrument panels.
Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Panel Cutout Dia. | End-to-End Lg. | Each | |
White Polypropylene Plastic Body | |||||||
|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | |||||||
| 1/8 | 0.4 | 125 psi @ 140° F | 35° to 140° | 7/8" | 2" | 0000000 | 000000 |
| 1/4 | 0.4 | 125 psi @ 140° F | 35° to 140° | 7/8" | 2" | 0000000 | 00000 |
NPT Female × NPT Male | |||||||
| 1/8 | 0.3 | 125 psi @ 140° F | 35° to 140° | 7/8" | 2 1/4" | 0000000 | 00000 |
| 1/4 | 0.4 | 125 psi @ 140° F | 35° to 140° | 7/8" | 2 3/8" | 0000000 | 00000 |
NPT Male × NPT Male | |||||||
| 1/4 | 0.4 | 125 psi @ 140° F | 35° to 140° | 7/8" | 2 11/16" | 0000000 | 00000 |
| Optional Nickel-Plated Brass Mounting Nuts | 0000000 | Each | 00000 |
Easy-Set Threaded Plastic Precision Threaded Flow-Adjustment Valves
- Valve Type: Needle
- For Use With: Air, Oxygen
- Seal Material: Buna-N Rubber
To ensure consistent and repeatable settings, these valves have color-coded handle threads and numerical markings. One full revolution of the handle reveals a new color to indicate the set point. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. The locking knob handle has a ring that prevents accidental adjustment.
Internal check valves actuate when the pressure changes to stop flow control from the controlled direction and allow free flow in the opposite direction. Valves with an internal check valve are often used to control the speed of air cylinders and air-powered motors.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
Valves | Mounting Nuts | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Panel Cutout Dia. | End-to-End Lg. | For Use With | Each | Each | ||
Black Glass-Reinforced Polyester Plastic Body | ||||||||||
NPTF Female × NPTF Female | ||||||||||
| 1/8 | 0.26 | 200 psi @ 200° F | 0° to 200° | 1" | 1 15/16" | Air, Oxygen | 0000000 | 000000 | 0000000 | 00000 |
| 1/4 | 0.48 | 200 psi @ 200° F | 0° to 200° | 1" | 1 15/16" | Air, Oxygen | 0000000 | 00000 | 0000000 | 0000 |
| 3/8 | 1.06 | 200 psi @ 200° F | 0° to 200° | 1 3/8" | 2 7/8" | Air, Oxygen | 0000000 | 00000 | 0000000 | 0000 |
| 1/2 | 1.35 | 200 psi @ 200° F | 0° to 200° | 1 3/8" | 2 7/8" | Air, Oxygen | 0000000 | 00000 | 0000000 | 0000 |
| 3/4 | 1.96 | 200 psi @ 200° F | 0° to 200° | 1 3/8" | 3" | Air, Oxygen | 0000000 | 00000 | 0000000 | 0000 |
Black Glass-Reinforced Polyester Plastic Body with Internal Check Valve | ||||||||||
NPTF Female × NPTF Female | ||||||||||
| 1/8 | 0.26 | 200 psi @ 200° F | 0° to 200° | 1" | 1 15/16" | Air, Oxygen | 00000000 | 00000 | 0000000 | 0000 |
| 1/4 | 0.48 | 200 psi @ 200° F | 0° to 200° | 1" | 1 15/16" | Air, Oxygen | 00000000 | 00000 | 0000000 | 0000 |
| 3/8 | 1.06 | 200 psi @ 200° F | 0° to 200° | 1 3/8" | 2 7/8" | Air, Oxygen | 00000000 | 00000 | 0000000 | 0000 |
| 1/2 | 1.35 | 200 psi @ 200° F | 0° to 200° | 1 3/8" | 2 7/8" | Air, Oxygen | 00000000 | 00000 | 0000000 | 0000 |
| 3/4 | 1.96 | 200 psi @ 200° F | 0° to 200° | 1 3/8" | 3" | Air, Oxygen | 00000000 | 000000 | 0000000 | 0000 |
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 Tube ID | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Panel Cutout Dia. | End-to-End Lg. | Each | |
White Polypropylene 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 |
| 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 Tube OD | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Panel Cutout Dia. | End-to-End Lg. | Each | |
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 | 000000 |
| 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 |
Threaded Precision Flow-Adjustment Valves for Chemicals
To withstand aggressive and corrosive solutions in chemical-processing applications, these valves have a fluoroelastomer seal and a plastic body. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control.
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.
- Valve Type: Needle
- For Use With: Water, Oil, Beverage, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Food, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol, Mineral Spirits, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide, Sodium Hypochlorite, Sulfuric Acid
- Seal Material: Fluoroelastomer Rubber
- Seat Material: PTFE Plastic
- Needle Material: Polypropylene Plastic
- Valve Type: Needle
- For Use With: Water, Citric Acid, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Nitric Acid, Salt Water, Soap Solutions
- Seal Material: Fluoroelastomer Rubber
- Seat Material: PTFE Plastic
- Needle Material: Polypropylene Plastic