SPECIALIZED FEATURES
We manufacture paddle 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 vented paddle blinds to meet any project requirement.
SIZING
1/2" to 60"
ORDERING
Rent Or Purchase
ORIGIN
Made in the USA
MATERIAL
Carbon, Stainless and Specialty Alloys
URGENCY
Same-day Shipping
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 blind flanges are manufactured to ASME B16.5 and B16.47 standards and are stamped with the corresponding line size, flange rating, material specification, grade, and heat number, ensuring easy identification and full traceability.
MATERIAL GRADES
Hydro Blind Solutions has a wide range of material grades in stock that are fully traceable with MTRs on every order. Our vented paddle blinds are manufactured for general applications, superior corrosion resistance, cryogenic (low temperature) services, high temperature services and high-pressure piping systems.
CARBON STEEL
A/SA516-70N
A/SA105N
A/SA350 LF2 Class 1
STAINLESS STEEL
A/SA240 304/304L
A/SA240 316/316L
A/SA240 321
A/SA240 347
A/SA240 2205 Duplex
CHROME ALLOY
A/SA387 Gr.5
A/SA387 Gr.9
A/SA387 Gr. 11
A/SA387 Gr.22
Every vented paddle blind we manufacture is built with materials certified to meet the stringent requirements of NACE MR0103 & MR0175, guaranteeing maximum reliability in corrosive H2S envrionments. For the most critical Sour Service applications, we offer paddle blinds made from Hydrogen Induced Cracking (HIC) Resistant Plate to ensure resistance to cracking.
WHY BUY VENTED PADDLE 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 PADDLE 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 Paddle Blind Solutions our customers asked.
WHAT IS A VENTED PADDLE BLIND USED FOR?
A vented paddle blind from Hydro Blind Solutions improves pipeline safety by allowing controlled pressure relief, pressure equalization, fluid draining, gas venting, and vacuum prevention during maintenance and hydrostatic testing. These capabilities help protect equipment and crews while providing dependable system isolation and confidence in every test and turnaround.
Vented Paddle blinds are available in a wide range of sizes, typically from 1/2” up to 96”, depending on the application, with options for isolation or hydro test thicknesses. Sizing should match your pipeline’s flange dimensions and pressure rating. For blinds 26”-60”, please specify Series A or Series B.
Yes, custom vented blinds can be fabricated from virtually any alloy or grade to meet your specific project needs, whether it’s special thickness or a specific port size. We also stock and manufacture vented paddle blinds in A516 Grade 70 Normalized (A516-70N) carbon steel, as well as 304L and 316L stainless steel. Each vented paddle blind is clearly stamped with line size and flange rating, and features smooth, safe edges. Hydro Blind Solutions is your trusted partner for high-performance vented paddle blinds built to exacting standards.
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!