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Isolation & Testing Products

Paddle Spacer Blinds for Piping Systems

When the paddle blind comes out, the paddle spacer goes in, holding flange spacing so the line can return to service. As a custom shop, we build spacers to match your paddle blinds in any size, rating, thickness, alloy, or face.

4 inch 600# Carbon Steel paddle spacer blind 4" 600# Carbon Steel
30 inch 150# Carbon Steel paddle spacer blind 30" 150# Carbon Steel
8 inch 600#, Machined Finish paddle spacer blind 8" 600#, Machined Finish
300# 304 SS, Extra-Wide paddle spacer blind 300# 304 SS, Extra-Wide
Spacer Dimensions Spacer 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#)
  • Size (1/2" to 96")
  • Thickness (Isolation, Hydro, Custom)
  • Face type and finish
  • Material
  • Quantity and date needed
Technical Data Sheet
Paddle Spacer Blinds
DS-PSB-001 Rev. Current
SpecificationDetails
Sizes1/2" – 96"
Thickness OptionsIsolation • Hydro • Custom
Rating Classes150# • 300# • 600# • 900# • 1500# • 2500#
Stocked Alloys516-Gr70 CS • 304/316 SS (Any Available Alloy)
Handle"O" Cut (identifies the in-line spacer)
Materials OriginUSA
Face OptionsFlat • Raised • RTJ Male • RTJ Female
Gasket TypesOval • Octagonal
Finish OptionsSerrated (125/250 RMS) • Mill
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 Paddle Spacer Blind?

A paddle spacer is an open ring with a handle, cut to the same OD and thickness as its matching paddle blind. The paddle blind isolates the line. When the blind is pulled, the spacer goes into the same gap, keeping the flange spacing and gasket seating correct so the line can go back in service without moving pipe.

Its rounded "O" cut handle sets it apart from the T or 7 handle on a paddle blind, so crews can tell at a glance which piece is in the line.

Also known as:

Spacer BlindRing SpacerSpacer RingLine Blind Spacer
4 inch 600# carbon steel paddle spacer blind with yellow handle
4" 600# Carbon Steel
30 inch 150# carbon steel paddle spacer blind with red handle
30" 150# Carbon Steel

What Are Paddle Spacers Used For?

  • Returning a line to service: replaces the paddle blind once maintenance, inspection, or testing is done
  • Holding flange spacing: fills the gap so flanges don't have to be pulled together, keeping gaskets seated and bolting correct
  • Marking an isolation point: the spacer stays in the line, so the blind can go back in the same spot at the next turnaround
Selection Guide

Paddle Blind + Spacer vs. Spectacle Blind

A spectacle blind combines a paddle blind and a spacer in one piece. Here's when each makes more sense.

Paddle Blind + SpacerSpectacle Blind
ConstructionTwo separate parts: a paddle blind and an open spacer ringOne machined piece, solid and open disc joined by a web
SwitchingSwap the blind and spacer at the flangeRotate in place; the blind never leaves the line
StorageThe piece not in use is stored, such as on the EZ Lock Blind Rack®None needed
Best ForLarge or heavy lines, tight clearance, and turnaround isolation where blinds come out for long periodsPermanent isolation points and frequent switching

See our Spectacle Blinds and Paddle Blinds pages.

1. Thickness: Match the Blind

A spacer is built to the same thickness as the paddle blind it replaces, so flange spacing doesn't change when you swap them.

IsolationMatches an isolation-thickness paddle blind. Routine maintenance isolation.
HydroMatches a hydro-thickness blind, built for hydrostatic test pressure (typically 1.5× MAWP) and much thicker to handle extreme pressures.
CustomAny thickness, including extra-wide spacers for special flange gaps.

Look up standard thicknesses on the Blind Thickness Chart, or call our technical team to confirm.

Paddle spacer dimensions: O.D., I.D., thickness, optional raised face on both sides
Key Dimensions

2. Face, Gasket & Finish

Blind face types: flat face, raised face, RTJ male, RTJ female, with oval and octagonal gaskets, mill and RMS finish
Flat Face (FF)Fully flat sealing surface. This distributes the bolt load evenly across a full-face gasket.
Raised Face (RF)Has an elevated surface around the center (1/16" for 150# & 300#, and 1/4" for higher ratings). Concentrates bolt load on the gasket for a tighter, more reliable seal. A raised face on both sides is available on request.
RTJ Male / FemaleRing profile or groove for metal-to-metal sealing in high-pressure, high-temperature service, commonly in oil, gas, and petrochemical applications.
RTJ GasketsR Oval (two line contacts, widely used), R Octagonal (higher efficiency, most common)
FinishMill (stocked standard) or Serrated 125/250 RMS. Other finishes made to order.
Custom IDSpacer bore made to any ID you need.
8 inch 600# paddle spacer blind with machined finish
8" 600#, Machined Finish

3. Material

Match the spacer to the pipe material and process fluid. All raw materials are PMI verified.

SA516 Gr 70 CSStocked standard for general industrial and refinery service.
304 / 316 SSStocked. Corrosion resistant. NSF ANSI/CAN 61 certified.
Duplex, Nickel Alloys, TitaniumMade to order, plus any other alloy that is available.

Handles Color-Coded by Class

Carbon steel spacer handles are painted by flange rating.

150#Red
300#Blue
600#Yellow
900#Green
1500#White
2500#Orange
300# 304 stainless steel extra-wide paddle spacer blind
300# 304 SS, Extra-Wide
ISO 9001:2015 Certified Manufacturer

Why USA Industries Paddle Spacers

We are the actual manufacturer, not a distributor. We've built isolation blinds in-house since 1982, so your spacers match your blinds exactly, 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
Waterjet & Plasma CutCNC precision to exact spec
Deburred EdgesSmooth, safe edges on every piece
QC VerifiedEvery cut inspected, every order double-checked
Stamped & PaintedSpecs stamped on; carbon steel painted
Save money: rent paddle spacer blinds from USA Industries
Common Questions

Paddle Spacer FAQ

Do I need a spacer if I use a spectacle blind?

No. A spectacle blind's open disc does the spacer's job. Spacers are for lines isolated with a separate paddle blind.

Can you match a spacer to a blind I already have?

Yes. Give us the size, rating, thickness, and face of the existing blind and we'll build the spacer to match.

Can I rent paddle spacers?

Yes. Rental and purchase are both available from every service center. See rentals.

Blind Storage Solutions
Need Blind Storage?
Protect Your 1/2"–14" Paddle Blinds with the Patented EZ Lock Blind Rack®

Rent or buy the Patented EZ Lock Blind Rack from the industry leader in blind storage solutions.

  • Safely store and organize "T" & "7" handle paddle blinds
  • Easy and safe to transport storage unit with lockable shelves.
  • Store up to 884 blinds (line size and blind thickness dependent)
  • Rental and purchase options available
  • Reduces handling damage and improves organization
  • Order fully stocked and receive discount
Learn More About EZ Lock Rack
EZ Lock Blind Rack® — Hydroblind Solutions

Technical Documentation


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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

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

Savings

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Engineering

Custom Engineering

Custom solutions designed to your exact specifications.

ISO Certified

ISO Certified Quality

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BBB A+ Rated

BBB A+ Rated

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

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