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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Steel Bleed Rings
- For Use With: Air, Natural Gas, Oil, Steam, Water
Access the inside of a pipe line to vent pressure, drain liquid, or take samples. These bleed rings act as a port where two pipe flanges meet, so you don’t have to disassemble your flanges to get inside. They include a plug, or you can attach your own fitting, valve, or probe. Made of black-coated steel, these bleed rings should be used in noncorrosive environments to prevent rusting.
Install these bleed rings between two pipe flanges along with a gasket on both sides to avoid leaks. They’re designed to fit flanges that meet ASME B16.5.
For technical drawings and 3-D models, click on a part number.
Plug | Black-Coated Steel | |||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size  | OD | ID | Width | Wall Thickness | Pipe Size | Thread Type | Each | |
For Flange Class 125 or 150 | ||||||||
| 2 | 4" | 2.375" | 1.5" | 0.813" | 1/2 | NPT | 0000000 | 0000000 |
| 3 | 5 1/4" | 3.5" | 1.5" | 0.875" | 1/2 | NPT | 0000000 | 000000 |
| 4 | 6 3/4" | 4.5" | 1.5" | 1.125" | 1/2 | NPT | 0000000 | 000000 |
| 6 | 8 5/8" | 6.625" | 1.5" | 1" | 1/2 | NPT | 0000000 | 000000 |
For Flange Class 300 | ||||||||
| 4 | 7" | 4.5" | 1.5" | 1.25" | 1/2 | NPT | 0000000 | 000000 |
| 6 | 9 3/4" | 6.625" | 1.5" | 1.563" | 1/2 | NPT | 0000000 | 000000 |
For Flange Class 600 | ||||||||
| 2 | 4 1/4" | 2.375" | 1.5" | 0.938" | 1/2 | NPT | 0000000 | 000000 |
| 3 | 5 3/4" | 3.5" | 1.5" | 1.125" | 1/2 | NPT | 0000000 | 000000 |
Stainless Steel Bleed Rings
- For Use With: Air, Natural Gas, Oil, Steam, Water
Create an access point in a pipe line where corrosion is a concern. Often used to relieve pressure or siphon and sample liquids, these bleed rings act as a port between two pipe flanges, eliminating the need to take apart your flanges to get inside. They include a plug, or replace the plug with your own fitting, valve, or probe. Made of stainless steel, these bleed rings resist rusting.
Install these bleed rings between two pipe flanges along with a gasket on both sides to avoid leaks. They’re designed to fit flanges that meet ASME B16.5.
304 stainless steel bleed rings keep corrosion at bay in wet conditions but will start to corrode when exposed to salt water. 316 stainless steel bleed rings withstand wet conditions as well as chemicals and salt water.
For technical drawings and 3-D models, click on a part number.
Plug | 304/304L Stainless Steel | 316/316L Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | OD | ID | Width | Wall Thickness | Pipe Size | Thread Type | Each | Each | ||
For Flange Class 125 or 150 | ||||||||||
| 2 | 4" | 2.375" | 1.5" | 0.813" | 1/2 | NPT | 0000000 | 0000000 | 0000000 | 0000000 |
| 3 | 5 1/4" | 3.5" | 1.5" | 0.875" | 1/2 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 4 | 6 3/4" | 4.5" | 1.5" | 1.125" | 1/2 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 6 | 8 5/8" | 6.625" | 1.5" | 1" | 1/2 | NPT | 0000000 | 000000 | 0000000 | 000000 |
For Flange Class 300 | ||||||||||
| 4 | 7" | 4.5" | 1.5" | 1.25" | 1/2 | NPT | 0000000 | 000000 | 000000 | 00 |
| 6 | 9 3/4" | 6.625" | 1.5" | 1.563" | 1/2 | NPT | 0000000 | 000000 | 000000 | 00 |
For Flange Class 600 | ||||||||||
| 2 | 4 1/4" | 2.375" | 1.5" | 0.938" | 1/2 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 3 | 5 3/4" | 3.5" | 1.5" | 1.125" | 1/2 | NPT | 0000000 | 000000 | 0000000 | 000000 |
Drainage Valves
Also known as stop cocks, install these valves on your tank for easy draining.
Valves with external seal are for higher flow applications than valves with an internal seal.
Inlet | Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Gender | Connection Type | For Use With | Cable Lg., ft. | Max. Pressure | Temp. Range, °F | Ht. | Body Material | Each | |
Thumb-Screw Handle | |||||||||||
External Seal | |||||||||||
| 1/4 | NPT | Male | Unthreaded Hole | Air | __ | 250 psi @ 250° F | -40° to 250° | 1 1/8" | Brass | 0000000 | 00000 |
Cable Pull | |||||||||||
Internal Seal | |||||||||||
| 1/4 | NPT | Male | Unthreaded Hole | Air | 1 1/2 | 250 psi @ 250° F | -40° to 250° | 1 1/4" | Brass | 00000000 | 0000 |
| 1/4 | NPT | Male | Unthreaded Hole | Air | 3 | 250 psi @ 250° F | -40° to 250° | 1 1/4" | Brass | 00000000 | 0000 |
| 1/4 | NPT | Male | Unthreaded Hole | Air | 4 | 150 psi @ 250° F | -65° to 250° | 1 7/8" | Brass | 00000000 | 0000 |
| 1/4 | NPT | Male | Unthreaded Hole | Air | 5 | 250 psi @ 250° F | -40° to 250° | 1 1/4" | Brass | 00000000 | 0000 |
Self-Draining Breather Vents
Minimize moisture buildup in enclosures. Also known as drain plugs, these breather vents have a small outlet that allows condensation to drain. They have a silicone O-ring above the threads for a tight seal. Install them at the lowest point of the enclosure. Breather vents meet IP66 for protection in washdown environments. Use them to prevent excess vacuum and pressure in cylinders, gear boxes, and tanks and to block debris from entering equipment.
Brass breather vents have good corrosion resistance.
316 stainless steel breather vents have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Max. Temp., °F | Ht. | Dia. | For Use With | Environmental Rating | Each | |
NPT Male | |||||||
|---|---|---|---|---|---|---|---|
Brass Body and Fitting | |||||||
| 1/2 | 320° | 15/16" | 1" | Air | IEC Zone 1 Groups IIC, IIB, IIA, IEC Zone 21 Groups IIIC, IIIB, IIIA, IP66, NEMA 4X | 0000000 | 000000 |
| 1/4 | 320° | 15/16" | 11/16" | Air | IP66, NEMA 4X | 0000000 | 00000 |
316 Stainless Steel Body and Fitting | |||||||
| 1/2 | 320° | 15/16" | 1" | Air | IEC Zone 1 Groups IIC, IIB, IIA, IEC Zone 21 Groups IIIC, IIIB, IIIA, IP66, NEMA 4X | 0000000 | 00000 |
| 1/4 | 320° | 15/16" | 11/16" | Air | IP66, NEMA 4X | 0000000 | 00000 |