Paddle Blinds
for Piping Systems
Money.
Rent.
- Flange Rating (150#, 300#, 600#, 900#, 1500#, 2500#)
- Size (1/2" – 96")
- Face Type (Flat, Raised, RTJ – Male or Female (if Female: Oval or Octagonal cut))
- Mill or Serrated Finish
- Blind Thickness (Isolation, Hydro, Custom)
- Handle Type (T, 7, Straight)
- Steel Material Type (Carbon, Stainless – 304, 316, Other)
- Quantity Needed
- Necessary Delivery Date
| Specification | Details |
|---|---|
| Sizes | 1/2" – 96" |
| Thickness Options | Isolation • Hydro • Custom |
| Rating Classes | 150# • 300# • 600# • 900# • 1500# • 2500# |
| Stocked Alloys | 516-Gr70 CS • 304/316 SS (Any Available Alloy) |
| Materials Origin | USA |
| Handle Options | T • 7 • Straight |
| Face Options | Flat • Raised • RTJ Male • RTJ Female |
| Gasket Types | Octagonal • Oval |
| Finish Options | Serrated (125/250 RMS) • Mill |
| Coating Options | Various |
Blind
Processing
What separates USA Industries blinds from the competition — built into every piece.
Why Our Blinds Are Different
We are the actual manufacturer, not just a reseller. Since 1982, using advanced CNC plasma and waterjet machines, each blind is crafted with engineered symmetry, clean edges, fresh paint (carbon steel), marked or stamped, and color-coded handles for easy flange rating identification. Also, our blind solutions are crafted from top-grade, American milled alloys, including carbon steel, stainless steel, and other specialized materials known for their strength, durability, and corrosion resistance.
Moreover, unlike others who may claim this, USA Industries has the largest stock for immediate delivery and in-house production.
Additional Information
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 paddle and spectacle blinds
- Stackable design for 16" and larger blinds
- Rental and purchase options available
- Reduces handling damage and improves organization
ABOUT PADDLE BLINDS / LINE BLANKS:
Paddle Blinds, are inserted between two flanges within piping systems.
- Function: First and foremost, paddle blinds temporarily stop or regulate flow during inspections, repairs, or testing.
- Material: Additionally, manufacturers use carbon steel, stainless steel, or other durable alloys to ensure paddle blinds withstand high pressures and temperatures.
- Advantages: Moreover, these blinds are easy to install and remove, cost-effective, and reliable for system isolation.
- Applications: As a result, industries such as refineries, chemical plants, petrochemical plants, cement plants, steel mills, storage terminals, and food processing facilities commonly use them.
- Alternative Names: Finally, paddle blinds may also be referred to as paddle blank, line blank, skillet blind, pancake blind, spade blind, isolation blind, or test blind.
Paddle Blind 3D Product Rotation
USA Industries NSF ANSI/CAN 61 certification applies exclusively to our stainless steel products.
NSF/ANSI 61 is the NSF standard that ensures any materials, coatings, or products that come into contact with drinking water do not leach harmful contaminants into the water at unsafe levels.
- Pipes & fittings (metal, plastic, concrete, etc.)
- Valves & gaskets
- Meters & water treatment devices
- Coatings, linings, sealants, solders
- Any materials that touch drinking water in distribution systems
- Leaching of lead, arsenic, mercury, and other heavy metals
- Leaching of organic contaminants (e.g., solvents, plasticizers)
- Other harmful chemicals that might migrate from material into water
- Required in most U.S. states and Canadian provinces for public water systems
- Certifies products are safe for use with potable (drinking) water
- Reduces liability and demonstrates regulatory compliance
We are committed to continuous innovation in piping isolation solutions, consistently enhancing our products to meet your needs. Our custom slip blind offerings include the exclusive EZ Vent-Purge®, EZ Vent®, EZ Purge®, and EZ Guillotine™ slip blinds, designed for optimal performance and efficiency. Additionally, we manufacture the patented EZ Lock Blind Rack®, a premier inventory management system that ensures secure storage, easy transportation, and enhanced organization, preventing common issues related to handling and safeguarding your blinds.
Technical Documentation
Frequently Asked Questions
Our steel plates are proudly sourced and manufactured in the United States. We work with trusted vendors who purchase their alloys from American mills that meet stringent quality and environmental standards, ensuring top performance and consistency in every product.
Absolutely. We can provide mill test reports (MTRs) and country of origin documentation upon request for your records or compliance needs.
We are the actual manufacturer, not just a reseller. Since 1982, each blind is crafted with perfect symmetry, clean edges, fresh paint, marked or stamped, and color-coded handles for easy flange rating identification. Moreover, unlike others who may claim this, USA Industries has the largest stock for immediate delivery and in-house production.
Most requests are for 5/16" thickness, although 1/4" or 3/8" are also very common.
T-handles, 7 handles, and Straight handle. We can also make custom handles for you.
Yes. We will customize your blind to your exact specifications.
We stock our isolation and hydrotest blinds with a mill finish and offer a 125/250 RMS serrated finish as a standard option, but we can manufacture to your exact requirements.
The term "paddle blind" is a general term that doesn't specify the thickness or purpose of the blind (whether for isolation or testing).
A "hydroblind," also known as a "hydrotest blind," is designed to withstand the maximum pressure during pipe testing according to ASME specifications.
Some companies exclusively use hydroblinds for isolation or testing, considering it a safer option. This ensures the blind can withstand latent pressure buildup in the line, unlike the 5/16" thickness isolation blind that might fail if the pressure rises significantly.
This is dependent on the flange's ASME rating. Sizes and thickness are manufactured to the ASME 16.48, API 590, ASME 16.5 specifications and will hold the pressure that the spec calls for.
We will manufacture your paddle blind(s) in any alloy you require, so long as the material is available.
Our color-coded handles allow you to easily identify the flange rating for the blind(s) you need.
150#: Red
300#: Blue
600#: Yellow
900#: Green
1500#: White
2500#: Orange
Yes. A Paddle Blinds is also referred to as a paddle flange, paddle blank, blind spade, line spade, isolation or test blind, flange skillet, pancake skillet, pancake blind, slip blind, blank blind, and more.