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Isolation & Testing Products

EZ Vent-Purge® Combo Slip Blinds

The EZ Vent® and EZ Purge® in one blind. Purge the line safely for hot work on the purge side, then bleed and control pressure or fluids through the vent port, without changing blinds. Typical lead time is 1–2 days.

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4 inch 300# 304 SS, Vent and Purge Sides EZ Vent-Purge slip blind

4" 300# 304 SS, Vent and Purge Sides‹›

3 inch 300# 316 SS EZ Vent-Purge slip blind

3" 300# 316 SS‹›

Purge Channels and Vent Port‹›

Purge Channel Layout‹›

Vent Port Location‹›

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 line size
Face type: mill or serrated (RTJ on request)
Thickness, if other than the default
Number of ports, type (NPT or SW), and location
Material
Quantity and date needed

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Technical Data Sheet

EZ Vent-Purge® Slip Blind

DS-EVPSB-001 Rev. Current

Specification	Details
Sizes	1/2" – 96"
Rating Classes	150# • 300# • 600# • 900# • 1500# • 2500#
Default Thickness	Hydrotest thickness + 1/4" for purge channels (1/2" minimum on small lines)
Vent Side	NPT or SW port • One or multiple ports
Purge Side	Milled channels, 1/4" deep (~50% purge area)
Handle	"V" Notch + "P" Cut (identifies a vent-purge blind)
Face Types	Mill • Serrated (125/250 RMS) • RTJ (on request)
Stocked Alloys	516-Gr70 CS • 304/316 SS (Any Available Alloy)
Materials Origin	USA
Lead Time	Typically 1–2 days (depends on quantity and specs)
Availability	Rent • Purchase

ASME StandardB16.48

ASME StandardB16.47 (26"+ Series A & B)

ASME StandardB16.5

The Basics

Two Blinds in One

One face of the disc is a vented blind, with a port drilled through the edge. The other face is a purge blind, with milled channels that create a controlled standoff at the flange. One blind, installed once, handles both jobs.

Vent SidePurge Side

What It DoesBlocks flow while giving access to bleed or drain the isolated sideCreates a standoff at the flange for line and hot-work purging

SafetyProtects downstream work if an upstream valve leaksSeals evenly, with no wedges or makeshift spacers damaging gasket faces

VerificationConfirms zero energy in the line and vents leaked pressure for hydrotestingAbout 50% purge area keeps the gasket seated and sealing

4 inch 300# 304 stainless EZ Vent-Purge blind showing the vent side and the purge side — Vent Side and Purge Side

Configuration

Vent Port Options

Port TypeNPT (threaded) or socket weld (SW).

Size & NumberYour choice of size, type, location, and number of ports.

Standard LocationAbout 180° from the handle, between bolt holes.

ThicknessLarger ports may need a thicker blind. We'll size it to fit both the vents and the purge channels.

Full port details are on the EZ Vent® page.

Vent port located 180 degrees from the handle — Port 180° from Handle

Purge channel layout: mill slots 1/4 inch deep — Mill Slots 1/4" Deep

Purge Channel Specs

ChannelsMilled 1/4" deep into the purge face.

Purge AreaAbout 50% of the gasket area, so the gasket still seats and seals evenly.

Default ThicknessStandard hydrotest thickness plus 1/4" for the channels. 1/2" minimum on small lines because of the NPT port.

Custom ThicknessAny thickness with room for the vent size and purge channels.

Full channel details are on the EZ Purge® page.

Easy to Identify

HandleA "V" notch in the middle, plus one rounded edge with a hole that forms a "P" when viewed from the purge side.

StampingLine size and flange rating, with "VENT" on the vented side and "PURGE" on the purge side.

Face & Material

Face TypesMill or serrated (125/250 RMS) standard. RTJ male or female on request.

Material516-Gr70 CS or 304/316 SS stocked; any available alloy, PMI verified. NSF ANSI/CAN 61 certified for stainless.

3 inch 300# 316 stainless EZ Vent-Purge blind stamped VENT and PURGE — 3" 300# 316 SS

See It Work

Safer, Quicker, Easier

One blind replaces the old routine of a slip blind, loose spacers, and a separate vent. Our specialists can demonstrate it at your facility.

EZ Vent-Purge 3D model showing purge channels and vent port — Purge Channels and Vent Port

ISO 9001:2015 Certified Manufacturer

Why USA Industries EZ Vent-Purge® Blinds

We are the actual manufacturer, not a distributor. We've built isolation blinds in-house since 1982, so ports, channels, and thickness 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 and ports to exact spec

Fast Lead TimeTypically 1–2 days

QC VerifiedEvery piece inspected, every order double-checked

Marked & PaintedBoth sides stamped; carbon steel painted

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Common Questions

EZ Vent-Purge FAQ

Is this a rental item?

Yes, for rental or purchase, depending on your needs. Some restrictions apply. See rentals.

Do I need an EZ Vent-Purge, or just one of the two?

If you only need to bleed or drain, the EZ Vent® is enough. If you only need to purge, choose the EZ Purge®. Choose the combo when the same isolation point needs both.

Can you provide documentation proving material origin?

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