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About Grease Fitting Threads
More
Breather Vents
Protect against excess vacuum and pressure in cylinders, gear boxes, enclosures, manifolds, and tanks. You can also use these breather vents to block debris from entering equipment.
Breather vents with splash guard are good for containers that are often filled and drained; they have a guard that prevents oil from splashing out of the vent hole.
For technical drawings and 3-D models, click on a part number.
| Style | Pipe Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | For Use With | Removes Particle Size Down To, microns | Features | Each | |
NPT Male | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Steel Body and Fitting | ||||||||||
| D | 1/8 | Not Rated | Not Rated | 225° | 1" | Air, Inert Gas, Oil, Water | 40 | __ | 0000000 | 00000 |
| D | 1/4 | Not Rated | Not Rated | 225° | 1" | Air, Inert Gas, Oil, Water | 40 | __ | 0000000 | 0000 |
| D | 3/8 | Not Rated | Not Rated | 225° | 1 1/16" | Air, Inert Gas, Oil, Water | 40 | __ | 0000000 | 0000 |
| D | 1/2 | Not Rated | Not Rated | 225° | 1 3/16" | Air, Inert Gas, Oil, Water | 40 | __ | 0000000 | 00000 |
| D | 3/4 | Not Rated | Not Rated | 225° | 1 1/4" | Air, Inert Gas, Oil, Water | 40 | __ | 0000000 | 00000 |
| E | 1/8 | Not Rated | Not Rated | 225° | 1 3/16" | Air, Inert Gas, Oil, Water | 40 | Splash Guard | 0000000 | 00000 |
| E | 1/4 | Not Rated | Not Rated | 225° | 1 3/16" | Air, Inert Gas, Oil, Water | 40 | Splash Guard | 0000000 | 00000 |
| E | 3/8 | Not Rated | Not Rated | 225° | 1 1/4" | Air, Inert Gas, Oil, Water | 40 | Splash Guard | 0000000 | 00000 |
| E | 1/2 | Not Rated | Not Rated | 225° | 1 5/16" | Air, Inert Gas, Oil, Water | 40 | Splash Guard | 0000000 | 00000 |
| E | 3/4 | Not Rated | Not Rated | 225° | 1 3/8" | Air, Inert Gas, Oil, Water | 40 | Splash Guard | 0000000 | 00000 |
Lockable Breather Vents with Cap
Secure access to vented openings in pipe and tanks—the cap can be locked to prevent tampering. These breather vents allow you to add a filling port to your hydraulic tank while protecting against excess pressure and vacuum. Use them to stop debris from entering your tank. Breather vents mount on top of standard tank openings with included hardware. Padlock is not included.
For technical drawings and 3-D models, click on a part number.
Material | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Max. Temp., °F | Ht. | Dia. | For Use With | Cap | Screen | For Max. Padlock Shackle Dia. | Each | |
NPT Male | |||||||||
| 2 | 200° | 4 1/2" | 5 5/8" | Air, Water | Aluminum | Stainless Steel | 3/8" | 0000000 | 000000 |
Energy-Saving Iron Steam Traps
Also known as thermostatic steam traps, these vent cool air and condensate to increase energy efficiency in your steam lines. The vent on these steam traps is normally open, allowing condensate and air to flow out. The vent closes immediately when steam enters to prevent energy loss. Use them with heat exchangers, air-heating coils, and drip stations in steam lines.
Style A has an inlet and an outlet on each side to connect inline or parallel steam and condensate lines.
Style B has an inlet and an outlet on the same side to connect parallel steam and condensate lines.
Style C has an inlet and outlet on opposite sides to connect inline steam and condensate lines.
| Style | Pipe Size | Thread Type | Gender | Pipeline Orientation | Max. Pressure, psi | Max. Temp., °F | Condensate Capacity, lbs./hr. | Lg. | Ht. | Includes | Each | |
Iron with Stainless Steel Float | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 3/4 | NPT | Female | Horizontal | 15 | 250° | 1,075 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 0000000 |
| A | 3/4 | NPT | Female | Horizontal | 30 | 270° | 1,370 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 000000 |
| A | 3/4 | NPT | Female | Horizontal | 75 | 320° | 1,450 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 000000 |
| A | 3/4 | NPT | Female | Horizontal | 125 | 350° | 1,190 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 000000 |
| A | 1 | NPT | Female | Horizontal | 15 | 250° | 1,075 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 000000 |
| A | 1 | NPT | Female | Horizontal | 30 | 270° | 1,370 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 000000 |
| A | 1 | NPT | Female | Horizontal | 75 | 320° | 1,450 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 000000 |
| A | 1 | NPT | Female | Horizontal | 125 | 350° | 1,190 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 000000 |
| A | 1 1/4 | NPT | Female | Horizontal | 15 | 250° | 2,340 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 000000 |
| A | 1 1/4 | NPT | Female | Horizontal | 30 | 270° | 2,000 | 3 5/16" | 5 3/4" | Two Plugs for Unused Ports | 0000000 | 000000 |
| B | 1 1/4 | NPT | Female | Horizontal | 75 | 320° | 5,400 | 3" | 8 3/8" | __ | 0000000 | 000000 |
| B | 1 1/4 | NPT | Female | Horizontal | 125 | 350° | 4,500 | 3" | 8 3/8" | __ | 0000000 | 000000 |
| B | 1 1/2 | NPT | Female | Horizontal | 15 | 250° | 7,600 | 3" | 8 3/8" | __ | 0000000 | 000000 |
| B | 1 1/2 | NPT | Female | Horizontal | 30 | 270° | 7,000 | 3" | 8 3/8" | __ | 0000000 | 000000 |
| B | 1 1/2 | NPT | Female | Horizontal | 75 | 320° | 5,400 | 3" | 8 3/8" | __ | 0000000 | 000000 |
| B | 1 1/2 | NPT | Female | Horizontal | 125 | 350° | 4,500 | 3" | 8 3/8" | __ | 0000000 | 000000 |
| B | 2 | NPT | Female | Horizontal | 15 | 250° | 10,900 | 4 15/16" | 9 1/8" | __ | 0000000 | 000000 |
| B | 2 | NPT | Female | Horizontal | 30 | 270° | 10,000 | 4 15/16" | 9 1/8" | __ | 0000000 | 000000 |
| B | 2 | NPT | Female | Horizontal | 75 | 320° | 7,700 | 4 15/16" | 9 1/8" | __ | 0000000 | 000000 |
| B | 2 | NPT | Female | Horizontal | 125 | 350° | 6,600 | 4 15/16" | 9 1/8" | __ | 0000000 | 00000000 |
| C | 1/2 | NPT | Female | Horizontal | 15 | 450° | 1,075 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 1/2 | NPT | Female | Horizontal | 30 | 450° | 1,370 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 1/2 | NPT | Female | Horizontal | 75 | 450° | 1,450 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 1/2 | NPT | Female | Horizontal | 125 | 450° | 1,190 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 1/2 | NPT | Female | Horizontal | 200 | 450° | 985 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 3/4 | NPT | Female | Horizontal | 15 | 450° | 1,075 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 3/4 | NPT | Female | Horizontal | 30 | 450° | 1,370 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 3/4 | NPT | Female | Horizontal | 75 | 450° | 1,450 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 3/4 | NPT | Female | Horizontal | 125 | 450° | 1,190 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 3/4 | NPT | Female | Horizontal | 200 | 450° | 985 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 1 | NPT | Female | Horizontal | 15 | 450° | 1,075 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 1 | NPT | Female | Horizontal | 30 | 450° | 1,370 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 1 | NPT | Female | Horizontal | 75 | 450° | 1,450 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 1 | NPT | Female | Horizontal | 125 | 450° | 1,190 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
| C | 1 | NPT | Female | Horizontal | 200 | 450° | 985 | 4 13/16" | 5 13/16" | __ | 00000000 | 000000 |
Sanitary Stainless Steel Steam Traps
Suitable for food, pharmaceutical, and other sanitary environments, these steam traps are made of 316 stainless steel with a Viton® fluoroelastomer O-ring to stand up to frequent washdowns with harsh cleaners and sanitizers. They have a smooth 20Ra interior finish—smoother than most food and dairy applications require—and a self-draining design to reduce the risk of bacteria growth. They also have quick-clamp tube fittings, which are easy to remove for cleaning and access to your line. The O-ring is FDA compliant for direct contact with food.
Use these steam traps to increase the efficiency of your radiator by venting cool air. Also known as thermostatic steam traps, they automatically open and close based on temperature. Install them with their outlet pointing down.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Gender | Pipeline Orientation | Connection Style | Max. Pressure, psi | Max. Temp., °F | Condensate Capacity, lbs./hr. | Lg. | Ht. | Dia. | Specifications Met | Each | |
316 Stainless Steel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | Female | Vertical | Quick Clamp | 90 | 350° | 2,580 | 2 5/8" | 2 5/8" | 1" | FDA Compliant 21 CFR 177.2600 | 0000000 | 000000000 |
| 3/4 | Female | Vertical | Quick Clamp | 90 | 350° | 2,580 | 2 5/8" | 2 5/8" | 1" | FDA Compliant 21 CFR 177.2600 | 0000000 | 00000000 |
| 1 | Female | Vertical | Quick Clamp | 90 | 350° | 2,580 | 2 5/8" | 2 5/8" | 2" | FDA Compliant 21 CFR 177.2600 | 0000000 | 00000000 |
Stainless Steel Steam Traps
Made of 316 stainless steel, these steam traps have excellent corrosion resistance. Also known as thermostatic steam traps, they increase the efficiency of your radiator by venting cool air. They open and close based on temperature. Use with convection heaters, drip lines, and risers. Steam traps should be installed with the outlet pointing down.
| Pipe Size | Thread Type | Gender | Pipeline Orientation | Max. Pressure, psi | Max. Temp., °F | Condensate Capacity, lbs./hr. | Lg. | Ht. | Dia. | Each | |
316 Stainless Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | NPT | Female | Vertical | 300 | 500° | 1,000 | 2" | 2" | 1 13/16" | 0000000 | 0000000 |
| 1/2 | NPT | Female | Vertical | 300 | 500° | 1,000 | 2 7/16" | 2 7/16" | 1 13/16" | 0000000 | 000000 |
| 1/2 | NPT | Female | Vertical | 650 | 650° | 650 | 3 3/4" | 3 3/4" | 1 3/4" | 0000000 | 000000 |
Brass and Bronze Steam Traps
These steam traps have good corrosion resistance. Also known as thermostatic steam traps, they increase the efficiency of your radiator by venting cool air. Steam traps open and close based on temperature. They are often used with convection heaters, drip lines, and risers.
Steam traps with vertical pipeline orientation should be installed with the outlet pointing down.
Inlet | Outlet | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipeline Orientation | Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Max. Pressure, psi | Max. Temp., °F | Condensate Capacity, lbs./hr. | Lg. | Each | ||
Brass | |||||||||||||
| A | Horizontal, Vertical | 1/2 | NPT | Male | 1/2 | NPT | Female | 25 | 265° | 210 | 2 7/8" | 0000000 | 0000000 |
| A | Horizontal, Vertical | 1/2 | NPT | Male | 1/2 | NPT | Female | 65 | 310° | 350 | 2 7/8" | 0000000 | 000000 |
| A | Horizontal, Vertical | 3/4 | NPT | Male | 3/4 | NPT | Female | 25 | 265° | 430 | 3 1/8" | 0000000 | 000000 |
| A | Horizontal, Vertical | 1 | NPT | Male | 1 | NPT | Female | 65 | 310° | 820 | 3 5/8" | 0000000 | 000000 |
| B | Horizontal | 1/2 | NPT | Male | 1/2 | NPT | Female | 25 | 265° | 210 | 4 1/2" | 0000000 | 000000 |
| B | Horizontal | 1/2 | NPT | Male | 1/2 | NPT | Female | 65 | 310° | 350 | 4 1/2" | 0000000 | 000000 |
| B | Horizontal | 3/4 | NPT | Male | 3/4 | NPT | Female | 25 | 265° | 430 | 5" | 0000000 | 000000 |
| C | Vertical | 1/2 | NPT | Male | 1/2 | NPT | Female | 125 | 350° | 1,500 | 5 1/8" | 0000000 | 000000 |
Bronze | |||||||||||||
| A | Horizontal, Vertical | 1/2 | NPT | Male | 1/2 | NPT | Female | 25 | 250° | 50 | 3 1/4" | 0000000 | 00000 |
| A | Horizontal, Vertical | 1/2 | NPT | Male | 1/2 | NPT | Female | 25 | 250° | 125 | 3 1/4" | 0000000 | 00000 |
| A | Horizontal, Vertical | 1/2 | NPT | Male | 1/2 | NPT | Female | 50 | 250° | 875 | 3 1/4" | 0000000 | 000000 |
| A | Horizontal, Vertical | 1/2 | NPT | Male | 1/2 | NPT | Female | 125 | 250° | 4,800 | 3 1/4" | 0000000 | 000000 |
| A | Horizontal, Vertical | 3/4 | NPT | Male | 3/4 | NPT | Female | 25 | 250° | 100 | 3 1/4" | 0000000 | 00000 |
| A | Horizontal, Vertical | 3/4 | NPT | Male | 3/4 | NPT | Female | 25 | 250° | 125 | 3 3/8" | 0000000 | 00000 |
| A | Horizontal, Vertical | 3/4 | NPT | Male | 3/4 | NPT | Female | 50 | 250° | 1,200 | 3 1/4" | 0000000 | 000000 |
| A | Horizontal, Vertical | 3/4 | NPT | Male | 3/4 | NPT | Female | 125 | 250° | 6,300 | 3 1/4" | 0000000 | 000000 |
Air-Release Valves for Water and Coolant
These valves are often used to remove air pockets in cooling and heating systems to maintain consistent flow and prevent water surges that can damage equipment. All have a vented relief port to exhaust discharge directly.
Corrosion-Resistant Air-Release
Valves for Water and Coolant
- Max. Pressure: 90 psi
- Temperature Range: See table
These valves are made of corrosion-resistant materials for use in wet conditions and harsh environments. They eliminate air pockets to maintain consistent flow and prevent water surges that can damage equipment. All have a vented relief port to exhaust discharge directly.
Valve with a Buna-N seal is for use in heating and cooling systems.
Valve with an EPDM seal is for use in cooling systems only.
Remote-Discharge Air-Release Valves for Water
- Max. Pressure: See table
- Temperature Range: 32° to 150° F
Unlike valves that release discharge directly, these have a threaded relief port to direct discharge away from your work environment. Often used to increase pump efficiency, they eliminate air pockets in your system to maintain consistent flow and prevent water surges that can damage equipment. All have a cast iron body to absorb vibration for reduced noise and wear in your pipeline.
Inlet | Relief Port | ||||||
|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Pipe Size | Location | Max. Pressure, psi | Overall Ht. | Each | |
NPT Female Inlet and Relief Port | |||||||
Cast Iron Body | |||||||
| 3/8 | Bottom | 3/8 | Top | 150 | 5 3/4" | 00000000 | 0000000 |
| 1/2 | Bottom | 3/8 | Top | 150 | 5 3/4" | 00000000 | 000000 |
| 1/2 | Bottom | 1/2 | Top | 300 | 5 1/2" | 00000000 | 000000 |
| 3/4 | Bottom | 3/8 | Top | 150 | 5 3/4" | 00000000 | 000000 |
| 3/4 | Bottom | 1/2 | Top | 300 | 5 1/2" | 00000000 | 000000 |
| 1 | Bottom | 3/8 | Top | 150 | 5 3/4" | 00000000 | 000000 |
| 1 | Bottom | 1/2 | Top | 150 | 9" | 00000000 | 000000 |
| 1 | Bottom | 1/2 | Top | 300 | 5 1/2" | 00000000 | 000000 |
| 2 | Bottom | 1/2 | Top | 150 | 9" | 00000000 | 000000 |
| 2 | Bottom | 1/2 | Top | 150 | 10 1/2" | 00000000 | 000000 |
Corrosion-Resistant Remote-Discharge
Air-Release Valves for Water
For excellent corrosion resistance in wet conditions and harsh environments, these valves have no metal parts. They eliminate air pockets to maintain consistent flow and prevent water surges that can damage equipment. All have a threaded relief port that can be attached to a drain line for remote discharge.
Inlet | Relief Port | |||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Pipe Size | Location | Max. Pressure, psi | Temperature Range, °F | Overall Ht. | Each | |
NPT Female Inlet and Relief Port | ||||||||
PVC Body | ||||||||
| 1/2 | Bottom | 1/2 | Top | 150 | 32° to 140° | 3" | 00000000 | 000000 |
| 3/4 | Bottom | 3/4 | Top | 150 | 32° to 140° | 3 1/2" | 00000000 | 000000 |
| 1 | Bottom | 1 | Top | 150 | 32° to 140° | 3 7/8" | 00000000 | 00000 |
| 1 1/4 | Bottom | 1 1/4 | Top | 150 | 32° to 140° | 4 1/2" | 00000000 | 000000 |
| 2 | Bottom | 2 | Top | 150 | 32° to 140° | 5 3/4" | 00000000 | 000000 |
Inline Air-Release Valves for Water
- Max. Pressure: 125 psi
- Temperature Range: 40° to 240° F
Eliminate air pockets without stopping flow—these valves have an internal wire brush that traps air bubbles and discharges them through the top relief port while allowing inline flow from the inlet to the outlet. They are often used to increase efficiency in heating and cooling systems. The vented relief port exhausts discharge directly. Valves have a durable bronze body for a long service life.
Key-Operated Air-Release Valves for Water
- Max. Pressure: 150 psi
- Temperature Range: 33° to 200° F
Turn the key to manually release air from radiators, heaters, and other hot water equipment. These valves have a vented relief port that exhausts discharge directly. Body is nickel-plated brass for good corrosion resistance.