Blind Flange ANSI B16.5 Class #300

Dimensions: 1/2″ – 24″

Description

The BLIND FLANGE ANSI B16.5 CLASS #300 is a high-performance industrial component designed for sealing the end of piping systems, pressure vessels, or valves. Manufactured to meet stringent ANSI B16.5 standards, this flange ensures reliable performance in high-pressure applications up to Class 300. It is ideal for temporary or permanent closure of pipelines, allowing for easy access during maintenance, inspection, or system modifications.Constructed from durable materials such as carbon steel, stainless steel, or alloy variants, this blind flange offers excellent resistance to corrosion, extreme temperatures, and mechanical stress. Its robust design includes a solid, flat face without a center bore, providing a secure seal when bolted between other flanges. Common applications include oil and gas, chemical processing, water treatment, and power generation industries, where safety and leak prevention are critical.Complies with ANSI B16.5 standards for dimensional accuracy and performanceRated for Class 300 pressure, suitable for demanding environmentsAvailable in various materials and sizes to match specific system requirementsEasy installation with standard bolt patterns, ensuring compatibility with existing fittingsEnhances system safety by preventing fluid or gas leakage in closed sectionsThis blind flange is an essential component for any industrial piping system, offering durability, versatility, and compliance with international standards. It is widely used in new installations, retrofits, and maintenance projects, providing a cost-effective solution for managing flow and pressure in complex networks. Ensure optimal performance and longevity by selecting the appropriate material grade and size for your application.

Additional information

Materials

No. DETAILS MATERIALS
1 Flange steel ASTM A105N
other steels - on request
stainless steels - upon request

Features

SPECIFICATION
Standard ANSI B16.5
Pressure #300 (PN 50)
Sealing surface flat face (FF)
Guidance surface options with flange (RF) or profile channel (RTJ)
Dimensions
DN flange dimensions open
Dz Do do g D1 f kg n
1/2" 95.2 66.5 15.7 14.2 35.0 1.6 0.64 4
3/4" 117.3 82.5 19.0 15.7 42.9 1.6 1.11 4
1" 123.9 88.9 19.0 17.5 50.8 1.6 1.39 4
1 1/4" 133.3 98.5 19.0 19.0 63.5 1.6 1.79 4
1 1/2" 155.4 114.3 22.3 20.6 73.1 1.6 2.66 4
2" 165.1 127.0 19.0 22.3 91.9 1.6 3.18 8
2 1/2" 190.5 149.3 22.3 25 A 104.6 1.6 4.85 8
3" 209.5 168.1 22.3 28.4 127.0 1.6 6.81 8
3 1/2" 228.6 184.1 22.3 30.2 139.7 1.6 8.71 8
4" 254.0 200.1 22.3 31.7 157.2 1.6 11.5 8
5" 279.4 234.9 22.3 35.0 185.6 1.6 15.6 8
6" 317.5 269.7 22.3 36.5 215.9 1.6 20.9 12
8" 381.0 330.2 25.4 41.1 269.7 1.6 34.3 12
10" 444.5 387.3 28.4 47.7 323.8 1.6 53.3 16
12" 520.7 450.8 31.7 50.8 381.0 1.6 78.8 16
14" 584.2 514.3 31.7 53.8 412.7 1.6 105 20
16" 647.7 571.5 35.0 57.1 469.9 1.6 137 20
18" 711.2 628.6 35.0 60.4 533.4 1.6 175 24
20" 774.7 685.8 35.0 63.5 584.2 1.6 221 24
24" 914.4 812.8 41.1 69.8 692.1 1.6 339 24