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Isolation & Testing Products

EZ Guillotine™ PSV Slip Blind

Isolate the flare header side of a pressure safety valve before you pull it for repair. The EZ Guillotine™ slips in with the PSV side bolts still in place, cutting open-pipe vapor exposure to seconds. A blind flange then bolts over it to hold the line.

EZ Guillotine with Bolt Holes slip blind EZ Guillotine with Bolt Holes
EZ Guillotine PSV Slip Blind slip blind EZ Guillotine PSV Slip Blind

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

  • PSV outlet flange rating (150# to 2500#) and line size
  • Face type and finish
  • Thickness, if other than 1/4"
  • O-rings or gaskets, if needed
  • Material
  • Quantity and date needed
Technical Data Sheet
EZ Guillotine™ PSV Slip Blind
DS-EGSB-001 Rev. Current
SpecificationDetails
Sizes1/2" – 96"
Rating Classes150# • 300# • 600# • 900# • 1500# • 2500#
Pressure Rating1–2 psi (flare header side, near zero pressure)
Thickness1/4" typical (thicker on request)
Handle OptionsT • 7 • Straight
Face TypesFlat • Raised • RTJ Male • RTJ Female
Finish OptionsMill • Serrated (125/250 RMS)
Seal OptionsSingle or multiple O-rings • Gaskets on request
Stocked Alloys516-Gr70 CS • 304/316 SS (Any Available Alloy)
Materials OriginUSA
AvailabilityPurchase only
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

Why PSVs Need Their Own Blind

Pulling a PSV opens the flare header side of the line. Even when header pressure is near zero, an open pipe can release enough vapor to ignite from a single spark. The longer it stays open, the greater the hydrocarbon or chemical release and the risk to your technicians.

The EZ Guillotine™ is designed specifically for PSV removal. It is cut just wide enough to slip in while the PSV side bolts stay in place, so the downstream side is sealed before the valve ever comes off.

Low-Pressure Use OnlyThe EZ Guillotine™ is rated for 1–2 psi. It is a temporary seal for the PSV swap. A blind flange bolted over it holds against intermittent header pressure.
EZ Guillotine PSV slip blind
EZ Guillotine™ PSV Slip Blind
Procedure

How to Install

Step 1Isolate the upstream side and release pressure.
Step 2On the downstream side, remove the bolts that block the blind and fully loosen the rest.
Step 3Slip the EZ Guillotine™ and gasket between the PSV and the unbolted flange.
Step 4Attach it to the downstream flange with hex bolts and washers, snug.
Step 5Remove the PSV.
Step 6Place a blind flange over the EZ Guillotine™ and secure all available holes with the original stud bolts.
ReinstallReverse the procedure, leaving the EZ Guillotine™ hex bolts in place.
EZ Guillotine PSV slip blind with bolt holes
Cut to Clear the PSV Side Bolts
Configuration

Seals, Thickness & Material

GasketsNot included as standard, available on request. We recommend a paper gasket affixed with adhesive on the flare header side and allowed to set.
O-RingsSingle or multiple O-rings available.
Thickness1/4" typical. Thicker on request.
Face & FinishFlat, raised, or RTJ male or female. Mill or serrated (125/250 RMS).
Material516-Gr70 CS or 304/316 SS stocked; any available alloy, PMI verified. NSF ANSI/CAN 61 certified for stainless.

Our specialists can demonstrate the EZ Guillotine™ at your facility.

ISO 9001:2015 Certified Manufacturer

Built for Safer PSV Swaps

We are the actual manufacturer, not a distributor. We've built isolation blinds in-house since 1982, 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
Cut to FitSized to clear your PSV side bolts
On-Site DemosWe'll show your crew how it works
QC VerifiedEvery piece inspected, every order double-checked
Same-Day ResponseQuotes back the same business day
Common Questions

EZ Guillotine FAQ

How much pressure can it hold?

1–2 psi. It is meant for when flare header pressure is near zero. Once the PSV is out, bolt a blind flange over it to hold against intermittent pressure.

Does it replace a blind flange?

No. It seals the line during the swap. The blind flange goes on over it and carries the load.

Are gaskets included?

Not as standard, but we can supply them on request. A paper gasket affixed with adhesive on the flare header side works well. Single or multiple O-rings are also available.

Can you show our crew how to use it?

Yes. Our specialists offer on-site product demonstrations. Call (800) 456-8721 to schedule.

Technical Documentation


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