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Piping Maintenance Solutions

Bleed Rings Drip Rings & Vent Rings

A bleed ring fits between two flanges and adds a tapped port to the joint, so you can drain, vent, sample, or connect a valve or instrument without modifying the pipe. Made in-house to your flange rating, size, and port spec, 1/2" to 24" standard with larger sizes on request. See dimensions ›

Stainless steel bleed ring with tapped port Stainless Steel Bleed Ring
Carbon steel bleed ring, overhead view Carbon Steel, Overhead
Carbon steel bleed ring with serrated RMS face Serrated (RMS) Face
RTJ bleed ring RTJ Bleed Ring
3 inch 150# 304 stainless bleed ring stamped with specs 3" 150# 304 SS
150# carbon steel bleed ring color-coded red 150# Carbon Steel
Bleed ring CAD drawing Bleed Ring CAD Drawing

Get a Quote or Order

Send us these details and we'll respond the same business day.

  • Flange rating (150# to 1500#, RTJ to 2500#)
  • Line size (1/2" to 24", larger on request)
  • Material
  • Face type and finish
  • Number, size, and type of ports (NPT or socket weld)
  • Quantity and date needed
Technical Data Sheet
Bleed Ring (Drip Ring)
DS-BR-001 Rev. Current
SpecificationDetails
Sizes1/2" – 24" (larger on request, up to 80" O.D.)
Rating ClassesFlat & Raised Face 150# – 1500# • RTJ to 2500#
Thickness1-1/2" typical (thicker on request or for larger ports)
Port Types1/2" or 3/4" NPT Threaded • Socket Weld (single or multiple)
Face TypesFlat • Raised • RTJ Female • RTJ Male (on request)
Face FinishSerrated (125/250 RMS) • Mill
RTJ GasketsOval • Octagonal
Materials304/316 SS • A516 Gr.70 CS (any available alloy)
Materials OriginUSA
FinishCarbon steel: one coat of black lacquer (unless specified)
IdentificationStamped with specs • Color-coded by class
AvailabilityPurchase
ASME StandardB16.5
ASME StandardB16.20
ASME StandardB16.47 (26"+)
NSF ANSI/CAN 61 Certification
NSF ANSI/CAN 61 certification applies exclusively to our stainless steel products.
The Basics

What Is a Bleed Ring?

A bleed ring is a thick, flange-sized ring with one or more tapped ports drilled through its edge. It installs between two flanges with a gasket on each side and gives you a permanent access point at that joint, with no cutting or welding on the pipe.

DrainDrain fluids from the line before maintenance.
Vent & BleedVent air or gas and bleed off trapped pressure through a valve.
SampleCollect samples for analysis or quality control without depressurizing the system.
Valves & InstrumentsConnect valves, gauges, and instruments to the piping system.

Also known as:

Bleed RingDrip RingVent Ring
Bleed ring installed between two flanges with a tapped port
Installed Between Two Flanges
Bleed ring connection types: NPT threaded and socket weld
NPT and Socket Weld Ports
Configuration

Ports & Connections

NPT Threaded1/2" or 3/4" standard. Larger taps on request; the ring may be made thicker to fit them.
Socket WeldFor welded valve or pipe connections.
Number of PortsOne port standard. Multiple ports on request.
ThicknessTypically 1-1/2". Make sure your studs are long enough for the ring, both gaskets, and the flanges.
Configuration

Face, Finish & Gaskets

Bleed ring face types: raised face and RTJ female, with oval and octagonal RTJ gaskets
Flat FaceFully flat sealing surface, 150# to 1500#.
Raised FaceRaised sealing surface to match raised-face flanges, 150# to 1500#.
RTJ FemaleStandard ring joint, with oval ring grooves. Available to 2500#.
RTJ MaleAvailable on request.
RTJ GasketsOval or octagonal.
FinishSerrated 125/250 RMS or mill.
Carbon steel bleed ring with serrated RMS face
Serrated Face
Bleed ring with RTJ groove
RTJ Groove

Materials

304 / 316 SSOur most common bleed ring material. NSF ANSI/CAN 61 certified.
A516 Gr.70 CSFinished with one coat of black lacquer unless you specify otherwise.
Other AlloysAny available alloy, PMI verified.

Color-Coded by Class

Every ring is stamped with its specs and color-coded by flange rating so crews can confirm the class at a glance.

150#Red
300#Blue
600#Yellow
900#Green
1500#White
2500#Orange
Stainless steel bleed ring stamped with size, rating, and material
Stamped with Specs
Carbon steel 150# bleed ring color-coded red
150# Carbon Steel
Size Chart

RTJ and 2500# dimensions are in the Bleed Ring Line Sheet (PDF). Larger sizes and custom configurations available on request.

Built to Your Spec

Custom Bleed Rings

We make every bleed ring in-house, so anything can be changed: thickness, port size and count, material, flange rating, or a combined bleed ring and blind flange assembly. Our lathes turn rings up to 80" O.D., and we can engineer solutions for even larger diameters.

Custom bleed ring and blind flange assemblies in the USA Industries shop
Custom Bleed Ring Assemblies
ISO 9001:2015 Certified Manufacturer

Why USA Industries Bleed Rings

We are the actual manufacturer, not a reseller, with same-day local shipping and delivery in Texas and Louisiana and 24/7/365 emergency service from S. Houston TX, Corpus Christi TX, Prairieville LA, and Broken Arrow OK.

Manufactured In-HouseComplete control over quality and lead times
U.S. Produced SteelRaw material from American mills
PMI VerifiedPositive material ID on all raw materials
Stamped & Color-CodedSpecs stamped on, color-coded by class
QC VerifiedEvery ring inspected, every order double-checked
NSF ANSI/CAN 61Certified for stainless steel
Common Questions

Bleed Ring FAQ

How thick are your bleed rings?

Typically 1-1/2" thick, and other thicknesses are available on request. Your studs need to be long enough for the bleed ring, both gaskets, and the flanges.

Can you put more than one port in a bleed ring?

Yes. Multiple NPT or socket weld ports can be added on request.

I need a larger NPT. Is that possible?

Yes. We can add a larger tap, but the ring may need to be thicker to accommodate it.

Are these available with socket weld taps?

Yes. We regularly supply bleed rings, drip rings, and vent rings with socket weld taps.

What flange ratings are available?

Flat and raised face bleed rings are standard from 150# to 1500#. RTJ bleed rings are available to 2500#. Other ratings can be custom manufactured.

What materials do your bleed rings come in?

Mostly 304 and 316 stainless steel, plus A516 Gr.70 carbon steel. We can make them in any material you need.

Can you make them larger than 24"?

Yes. Our lathes turn rings up to 80" O.D., and we can engineer solutions for even larger diameters.

Do you rent bleed rings?

No. Bleed rings are available for purchase only.

Technical Documentation

Downloads & Resources

Bleed ring line sheet front page
Bleed Ring Line Sheet

Why Choose USA Industries

From pipe blinds to heat exchanger tools, we deliver custom-engineered products with the fastest turnaround times in the industry.

Speed

Fastest Turnaround

Available 24/7 - 365 days a year with same-day shipping available on stock items. Custom orders in days, not weeks.

Savings

Direct Pricing

No middlemen markup. Buy direct from the manufacturer with 40+ years of industry excellence and save.

Engineering

Custom Engineering

Custom solutions designed to your exact specifications.

ISO Certified

ISO Certified Quality

A quality driven ISO 9001:2015 certified manufacturer ensures consistent excellence.

BBB A+ Rated

BBB A+ Rated

The highest grade awarded, signifying USAI operates with high integrity and a strong commitment to resolving customer issues.

Our product specialists are available 24/7. Call Now.

(800) 456-8721
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