About Precision Flow-Adjustment Valves
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About Process Pumps
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How to Prime Your Pump
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How to Determine Feet of Head
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Fixed-Flow-Rate Metering Pumps for Chemicals
Also known as peristaltic pumps and tubing pumps, these maintain a fixed flow rate. Pumps are self-priming, which means they create a suction force to draw liquid upward and fill the pump chamber. Mount them up to 25 feet above your liquid source. All can run dry. Do not use with solids.
Pumps with Viton® fluoroelastomer tubing withstand oil such as gasoline and hydraulic oil.
Overall | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Flow Rate, gal./day (For Tube ID) | Max. Pressure, psi | Max. Viscosity, cP | Temp. Range, °F | Horsepower | Current, A  | Lg. | Wd. | Ht. | Includes | Each | |
115V AC,Single Phase—Plug | |||||||||||
PVDF Plastic and Viton® Fluoroelastomer Rubber Wetted Parts Material | |||||||||||
| 0.02 (1/32") 0.07 (1/16") 0.25 (1/8") | 30 | 800 | 32° to 122° | Subfractional | 0.03 | 5 1/2" | 3 1/4" | 3 3/4" | 4 1/2" Lg. of 1/32" ID Viton® Fluoroelastomer Tubing (Shore A60), 4 1/2" Lg. of 1/16" ID Viton® Fluoroelastomer Tubing (Shore A60), 4 1/2" Lg. of 1/8" ID Viton® Fluoroelastomer Tubing (Shore A60) | 000000000 | 0000000 |
| 0.11 (1/32") 0.34 (1/16") 1.25 (1/8") | 30 | 800 | 32° to 122° | Subfractional | 0.03 | 5 1/2" | 3 1/4" | 3 3/4" | 4 1/2" Lg. of 1/32" ID Viton® Fluoroelastomer Tubing (Shore A60), 4 1/2" Lg. of 1/16" ID Viton® Fluoroelastomer Tubing (Shore A60), 4 1/2" Lg. of 1/8" ID Viton® Fluoroelastomer Tubing (Shore A60) | 000000000 | 000000 |
| 0.87 (1/16") 3.53 (1/8") 6.84 (3/16") | 30 | 800 | 32° to 122° | Subfractional | 0.03 | 5 1/2" | 3 1/4" | 3 3/4" | 6" Lg. of 1/16" ID Viton® Fluoroelastomer Tubing (Shore A60), 6" Lg. of 1/8" ID Viton® Fluoroelastomer Tubing (Shore A60), 6" Lg. of 3/16" ID Viton® Fluoroelastomer Tubing (Shore A60) | 000000000 | 000000 |
| 1.75 (1/16") 7.07 1/8") 13.68 (3/16") | 30 | 800 | 32° to 122° | Subfractional | 0.03 | 5 1/2" | 3 1/4" | 3 3/4" | 6" Lg. of 1/16" ID Viton® Fluoroelastomer Tubing (Shore A60), 6" Lg. of 1/8" ID Viton® Fluoroelastomer Tubing (Shore A60), 6" Lg. of 3/16" ID Viton® Fluoroelastomer Tubing (Shore A60) | 000000000 | 000000 |
| 22.80 (3/16") 38.00 (1/4") | 15 | 500 | 32° to 122° | Subfractional | 0.52 | 5" | 5" | 7" | 6" Lg. of 3/16" ID Viton® Fluoroelastomer Tubing (Shore A60), 6" Lg. of 1/4" ID Viton® Fluoroelastomer Tubing (Shore A60) | 000000000 | 000000 |
| 45.6 (3/16") 76.00 (1/4") | 15 | 200 | 32° to 122° | Subfractional | 0.65 | 5" | 5" | 7" | 6" Lg. of 3/16" ID Viton® Fluoroelastomer Tubing (Shore A60), 6" Lg. of 1/4" ID Viton® Fluoroelastomer Tubing (Shore A60) | 000000000 | 000000 |
| 228.00 (3/16") 380.00 (1/4") | 15 | 50 | 32° to 122° | Subfractional | 1.74 | 5" | 5" | 7" | 6" Lg. of 3/16" ID Viton® Fluoroelastomer Tubing (Shore A60), 6" Lg. of 1/4" ID Viton® Fluoroelastomer Tubing (Shore A60) | 000000000 | 000000 |
PTFE Air-Powered Transfer Pumps for Harsh Chemicals
With all PTFE wetted parts, these pumps offer the best chemical resistance of all our air-powered transfer pumps and can handle solvents and petroleum-based fluids that PVDF pumps can’t. Pumps are self-priming, which means they create a suction force to draw liquid upward to fill the pump chamber. All can run dry.
Fluid-side maintenance kits include diaphragms, check valve balls, and seals.
Air-motor maintenance kits include seals, O-rings, gaskets, retaining rings, and an air valve spool.
Overall | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Max. Flow Rate, gpm | Air Consumption, cfm | Air Connection (NPT) | Intake Pipe Connection (NPT) | Discharge Pipe Connection (NPT) | Lg. | Wd. | Ht. | Each | |
231 Max. ft. of Head—100 psi Max. Discharge Pressure | |||||||||
| 2.5 | 4.8 | 1/8 Female | 1/4 Female | 1/4 Female | 3 3/8" | 5 1/2" | 6 1/2" | 000000 | 000000000 |
| 6.7 | 9.3 | 1/8 Female | 3/8 Female | 3/8 Female | 3 1/2" | 5 7/8" | 7 5/8" | 000000 | 00000000 |
| 16 | 29 | 1/4 Female | 1/2 Female | 1/2 Female | 6" | 9 3/16" | 8" | 000000 | 00000000 |
| 39 | 46 | 1/4 Female | 1 Female | 1 Female | 8" | 10 7/8" | 10 3/8" | 000000 | 00000000 |
| Fluid-Side Maintenance Kit for 2925N1 | 0000000 | Each | 0000000 |
| Air-Motor Maintenance Kit for 2925N1 | 0000000 | Each | 000000 |
| Fluid-Side Maintenance Kit for 2925N4 | 0000000 | Each | 00000000 |
| Air-Motor Maintenance Kit for 2925N4 | 0000000 | Each | 000000 |
| Fluid-Side Maintenance Kit for 2925N2 | 0000000 | Each | 000000 |
| Air-Motor Maintenance Kit for 2925N2 | 0000000 | Each | 000000 |
| Fluid-Side Maintenance Kit for 2925N3 | 0000000 | Each | 00000000 |
| Air-Motor Maintenance Kit for 2925N3 | 0000000 | Each | 000000 |
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 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 | |||||||||
| 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 | 000000 |
| 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 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 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.