Blind Flange

Blind flanges are used to close off the ends of pipes, valves, or other equipment, providing a secure seal.

Product Features:

Brand: JS FITTINGS
Place of Origin: CHINA
Material: carbon steel, alloy steel, stainless steel
Standard: ANSI/ASME B16.5, EN 1092, GOST33259, BS, DIN, SABS
Surface Treatment: anti-rust oil, black painting, yellow painting

Product

INFORMATION

Blind Flanges – The Essential Pipeline Closure Solution

What Are Blind Flanges?

Blind flanges (also termed “closure plate flanges”) serve as permanent or temporary termination points in piping systems. Unlike standard flanges, they feature a solid center without a borehole, creating an impenetrable seal when bolted to pipe ends, valves, or pressure vessels.

At JSFITTING, we manufacture industry-compliant blind flanges in all sizes and pressure classes, offering three sealing face variants:
Flat Face (FF)
Raised Face (RF)
Ring-Type Joint (RTJ)

Blind flange

Our Blind Flanges Core Features & Benefits

1. Flow Isolation
No central opening ensures zero media leakage—critical for system maintenance or pressurization testing.
2. Multi-Functional Adaptability
Convertible to slip-on flanges via drilling
Threadable for threaded flange applications
3. Material Versatility
Available in:
Carbon Steel (ASTM A105)
Stainless Steel (A182 F304/316)
Alloy Steel (F11/F22/F91)
4. Pressure-Containment Ready
Designs comply with ASME B16.5/B16.47 pressure ratings from Class 150 to 2500.

Key Applications

Oil & Gas Platforms
Pipeline pigging isolation
Wellhead termination
Chemical Plants
Reactor vessel sealing
Water Treatment
Pump discharge termination
System expansion cap points

More blind flange Application, please click here.

Installation Best Practices

1. Gasket Selection Guide:
RF Flanges: Use ring gaskets (RTJ for high-pressure)
FF Flanges: Require full-face gaskets to distribute bolt loads
2. Critical Placement Locations:
Upstream/downstream of block valves
Equipment nozzle termination
Figure-8 Blinds for frequent access points