SPECIALIZED FEATURES
We manufacture figure 8 blinds using high-quality steel plates, such as A516 Grade 70 Normalized (A516-70N) carbon steel, as well as 304L and 316L stainless steel. Need a specific alloy or grade? We can manufacture paddle blinds to meet any project requirement.
SIZING
1/2" to 60"
ORDERING
Purchase
ORIGIN
Made in the USA
MATERIAL
Carbon, Stainless and Specialty Alloys
URGENCY
Same-day Shipping
If your project requires special thicknesses, our on-site on-site manufacturing facility can provide custom solutions to meet your exact specifications.
We support a full range of pressure rating classes, including 150#, 300#, 400#, 600#, 900#, 1500#, and 2500#. You can choose between Flat Face (FF), Raised Face (RF), or Ring Type Joint (RTJ) flange types, and select a Serrated (125/250 RMS) or Mill Finish surface, depending on your system requirements. We also offer a variety of protective steel coatings to ensure longlasting durability in corrosive environments.
All figure 8 blinds are manufactured to ASME B16.48 standards and are stamped with the corresponding line size, flange rating, material specification, grade, and heat number, ensuring easy identification and full traceability. Edges are smooth and deburred for safe handling in industrial environments. All drawings are downloadable on our website with same-day shipping and delivery across the United States.
VIEW DIMENSION CHARTS HEREFIGURE 8 BLINDS SPECIFICATIONS AND CUSTOMIZATIONS
Hydro Blind Solutions offers high-quality spectacle blinds available in a wide range of sizes — from 1/2” to 60” in both isolation and hydro test thicknesses.
When ordering sizes larger than 24” (26” to 60”) make sure to specify whether you need Series A or Series B.
WHY BUY FIGURE 8 BLINDS FROM US?
Trusted quality and reliable isolation piping products, made in the USA— with 24/7 support you can rely on.
Same-day
Fast Shipping
On-site
Manufacturing
Facility
Manufactured to
ASME and ASTM
Standards
24/7 On-call
Service
QUESTIONS WE WILL ASK WHEN PLACING YOUR ORDER FOR FIGURE 8 BLINDS
- check_circleNormal Size?
- check_circleThickness?
- check_circlePressure Class?
- check_circleFace Finish?
- check_circleOver 24" (26" to 60")
- Series A or B? - check_circleWhere are we Shipping to?
- check_circleMaterial Grade?
- check_circleWhat is the On-site Delivery Date?
HAVE A QUESTION? WE ARE HERE TO HELP
Check out the most common questions about Spectacle Blind Solutions our customers asked.
WHAT IS A FIGURE 8 BLIND USED FOR?
A figure 8 blind is installed in the line between two pipe flanges and bolted in place. These blinds consist of two metal discs, connected by a web, that resemble a pair of spectacles (glasses) or the number eight. One disc is solid, while the other has an opening, allowing flow through the system when aligned with the pipe or vessel. Our figure 8 blinds are manufactured from a single machined metal piece, when possible, eliminating the need for separate paddle blinds and spacers during pipe maintenance isolation. The one-piece construction is for safety with less chance of failure from a welded product.
A figure 8 blind is installed in the line between two pipe flanges and bolted in place. These blinds consist of two metal discs, connected by a web, that resemble a pair of spectacles (glasses) or the number eight. One disc is solid, while the other has an opening, allowing flow through the system when aligned with the pipe or vessel. Our figure 8 blinds are manufactured from a single machined metal piece, when possible, eliminating the need for separate paddle blinds and spacers during pipe maintenance isolation. The one-piece construction is for safety with less chance of failure from a welded product.
Figure 8 blinds are available in a wide range of sizes, typically from 1/2" up to 60" or more, depending on the application. Sizing should match your pipeline's flange dimensions and pressure rating.
The choice between Series A or Series B paddle blinds is based on the flange dimensions defined by ASME B16.47. Series A paddle blinds have a larger outside diameter and greater thickness. Series B paddle blinds have a smaller outside diameter and are thinner, making them lighter and more compact.
⚠️ Important: Series A and Series B are not interchangeable.
Always check your piping specifications or flange drawings to ensure you select the correct series for your application.
Contact our customer support 409-736-7665 — available 7:00 AM – 4:30 PM M-F, with 24 hour call out services available —, or fill out our contact form and we'll get back to you!