A metallic industrial valve with a blue handwheel, vertical orientation, and multiple bolted connections; the word "NUCLEAR" appears in a blue box at the bottom right corner.

Cast Steel Bellows Seal Bolted Bonnet Gate Valves for Nuclear Applications

Product Line

Cast steel gate, globe, and check valves

Product Type

Gate

Features & Benefits

Available for nuclear class 1, 2, and 3 and safety related applications.

Design features

Long cycle life bellows (2000 cycles) in Gr. 321 (stainless), or lnconel.
Improved body-bonnet joint. Graphite reinforced with SS foil gasket for Class 150 valves. Fully-encased, spiral wound graphite-filled Gr. 316 (stainless) gasket for Classes 300-600.
Bolted body-bonnet for fast serviceability. Hermetically sealed bonnets available for Classes 300 and 600.
Two or three section bellows assembly.
Non-rotating stem prevents torsion of bellows.
Two secondary stem seals:
a) Backseat in open position; and
b) Graphite packing.
Welded-in seat hardfaced with Stellite 6.
Wedge hardfaced with Stellite 6 for long life.
Seating faces hardfaced with Stellite 6, ground and lapped.

Product Details

Spec	Detail
Size Range	NPS 2 - 12 (DN 50 - 300)
Pressure Class	ASME classes 150-600
Standard Connections	Flanged or Butt weld

Quality That Lasts

Precision Engineered

Our products, crafted with cutting-edge precision, set the industry standard for quality, reliability, and versatility across an expansive range of applications.

Long-Lasting & Durable

Velan leverages advanced engineering capabilities and innovation to create durable valves that meet critical industrial needs in the areas of nuclear power, mining, oil and gas, and more.

Certified & Tested

Innovation is our DNA. From our first steam trap to advanced cutting-edge valve designs, we are committed to providing solutions that define the highest standards of quality and performance.

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