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Isolation & Testing Products

EZ Purge® Purge Slip Blinds

A slip blind with milled purge channels in its face. It creates a controlled standoff at the flange for line and weld purging, so there's no prying flanges apart with wedges, tubing, or spacers, and no damage to gasket surfaces.

2-1/2 inch 300# Carbon Steel EZ Purge slip blind 2-1/2" 300# Carbon Steel
4 inch 300# 316 SS EZ Purge slip blind 4" 300# 316 SS
6 inch 300# Carbon Steel EZ Purge slip blind 6" 300# Carbon Steel
3 inch 150# 304 SS EZ Purge slip blind 3" 150# 304 SS
Purge Channels in the Flange Purge Channels in the Flange
EZ Purge Dimensions EZ Purge Dimensions
Rent or Purchase Rent or Purchase

Get a Quote or Order

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

  • Flange rating (150# to 2500#) and size
  • Face type: mill or serrated (RTJ on request)
  • Isolation or hydrotest service
  • Channel depth, if deeper than 1/4"
  • Material
  • Quantity and date needed
Technical Data Sheet
EZ Purge® Slip Blind
DS-EPSB-001 Rev. Current
SpecificationDetails
Sizes1/2" – 96"
Rating Classes150# • 300# • 600# • 900# • 1500# • 2500#
Standard Thickness1/2" (isolation service; hydrotest version available)
Purge Channels1/4" deep • 3/4", 1", or 1-1/2" wide (by size)
Purge Area~50% of gasket area (protects the seal)
Handle"P" Cut (identifies a purge blind in the line)
Face TypesMill • Serrated (125/250 RMS) • RTJ (on request)
Stocked Alloys516-Gr70 CS • 304/316 SS (Any Available Alloy)
Materials OriginUSA
Coating OptionsVarious
AvailabilityRent • Purchase
ASME StandardB16.48
ASME StandardB16.47 (26"+ Series A & B)
ASME StandardB16.5
NSF ANSI/CAN 61 Certification
NSF ANSI/CAN 61 certification applies exclusively to our stainless steel products.
The Basics

What Is a Purge Blind?

A purge blind isolates the line like a standard slip blind, but the purge side of the disc has milled channels that run to the outside edge. With the flanges bolted up, purge gas flows through the channels, giving you a controlled standoff at the flange instead of a gap forced open by hand.

Also known as:

Purge BlindStandoff BlindPurge Slip Blind
2-1/2 inch 300# carbon steel EZ Purge slip blind with blue P cut handle
2-1/2" 300# Carbon Steel

Replaces the Old Way of Purging

Wedges, Tubing & SpacersEZ Purge®
StandoffFlanges pried apart by hand; gap varies around the jointMilled channels set a consistent, controlled standoff
Gasket SurfacesWedges and metal shims can scratch or dent the facesEven seal; ~50% purge area protects the gasket surface
SetupSlip blind plus loose spacers and tubing to manageOne piece, installed like a standard slip blind
EZ Purge slip blind installed between flanges with purge gas flowing through the channels
Purge Gas Through the Channels

What Are Purge Blinds Used For?

  • Line purging: purge gas in or out at the flange while the line stays isolated
  • Weld purging: inert gas shielding for clean, high-quality welds, protected from the atmosphere
  • Maintenance isolation: keeps the rest of the system online during targeted work

Standard EZ Purge blinds are for isolation only. For hydrotesting, order the hydrotest version, built with a thicker non-purged side.

Configuration

Channel & Purge Specs

ChannelsMilled 1/4" deep, 3/4", 1", or 1-1/2" wide depending on size.
Deeper ChannelsAvailable. For much deeper channels we'll recommend a thicker blind.
Purge AreaAbout 50% of the gasket area, so the gasket still seats and seals evenly.
GasketsUse with or without a gasket on the purge side. Purge flow is the same either way.
Thickness1/2" standard. Hydrotest version adds thickness to the non-purged side.
Face TypesMill or serrated (125/250 RMS) standard. RTJ male or female on request.
EZ Purge dimensions: milled slots 1/4 inch deep at 45 degree spacing
Mill Slots 1/4" Deep
4 inch 300# 316 stainless EZ Purge blind
4" 300# 316 SS

"P" Cut Handle

Every EZ Purge handle has a "P" cut so crews can spot a purge blind in the line at a glance. Blinds are indent marked with size, rating, and material, and edges are polished smooth.

Handles Color-Coded by Class

Carbon steel handles are painted to standard flange rating colors.

150#Red
300#Blue
600#Yellow
900#Green
1500#White
2500#Orange

Material

SA516 Gr 70 CSStocked standard.
304 / 316 SSStocked. NSF ANSI/CAN 61 certified.
Other AlloysAny available alloy, PMI verified.
Need a Vent Too?

EZ Vent-Purge® Combination

Purge channels and a vent port in one blind. The EZ Vent-Purge® combines the EZ Purge and EZ Vent® in a single specialty blind.

EZ Vent-Purge blind 3D model showing purge channels and vent port
EZ Vent-Purge®
ISO 9001:2015 Certified Manufacturer

Why USA Industries EZ Purge® Blinds

We are the actual manufacturer, not a distributor. We've built isolation blinds in-house since 1982, so channel depth, thickness, and face are engineered to your spec, with 24/7/365 emergency service from S. Houston TX, Corpus Christi TX, Prairieville LA, and Broken Arrow OK.

U.S. Produced SteelRaw material from American mills
PMI VerifiedPositive material ID on every piece
Precision MilledCNC channels to exact spec
Polished EdgesSmooth, safe edges on every blind
QC VerifiedEvery piece inspected, every order double-checked
Marked & PaintedSpecs indent marked; carbon steel painted
Save money: rent EZ Purge blinds from USA Industries
Common Questions

EZ Purge FAQ

Can I hydrotest against the non-purged side?

Not with a standard blind, which is designed for isolation only. Tell us when you order and we'll build a hydrotest version with a thicker non-purged side.

Are EZ Purge blinds available for rental?

Yes, for rental or purchase. See rentals.

Can you provide documentation proving material origin?

Yes. Mill test reports (MTRs) and country of origin documentation are available on request.

Technical Documentation


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