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Cryogenic Ball Valves – Floating & Trunnion Mounted

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Cryogenic Ball Valves – Floating & Trunnion Mounted

Cryogenic Ball Valves – Floating & Trunnion Mounted

GKV134D/GKV225D Cryogenic Ball Valves – Floating & Trunnion Mounted are designed with extended bonnets and high-performance sealing systems to ensure safe, leak-free operation at extremely low temperatures. Engineered and tested for demanding cryogenic services, these valves deliver long-term reliability in LNG plants, air separation units, liquid oxygen and nitrogen storage, hydrogen applications, and other industrial processes requiring precise control of cryogenic fluids.

GKV Cryogenic Ball Valve – Floating & Trunnion Mounted, Low-Temperature Performance

Size range

DN15 to DN1000 (½" to 40"), custom sizes available

 


Body & Bonnet Material

A350 LF2, LCB, LCC, CF8, CF8M (304L/316L), CF3, CF3M
Inconel, Monel, Super Duplex, low-temperature Cr-Ni steels


Temperature range

-196°C to +80°C (-321°F to +176°F)

 


Ball / Stem Material

304 / 316 / CF8M stainless steel, Inconel, Monel, optionally low-friction or hardened coating

 


Maximum Allowable Working Pressure

ANSI / ASME Class 150 – 2500 (depends on size and material)


Seats & Seals

Cryogenic-grade PTFE, PCTFE, reinforced PTFE (RPTFE), or metal-to-metal seals


Stem Packing

PTFE / Graphite composite, low-temperature resistant, optional bellows packing


Operation Method

Manual (Handwheel / Gear), Pneumatic, Electric Actuated


Special / Optional Materials

Super Duplex, Inconel, Monel, special cryogenic alloys for corrosive fluids or extreme low temperatures


End Connection Standards

Flanged: ASME B16.5 / EN1092
Butt Weld: ASME B16.25, Socket Weld, Threaded NPT, other custom connections available


Design Standards

ASME B16.34, API 608, BS 6364 / ISO 14313

 


Applications

LNG storage, transfer, industrial and specialty gas pipelines, cryogenic chemical processing, low-temperature fluid control

 


Testing & Inspection

Pressure & Leakage Test: API 598 / ISO 5208
Cryogenic Functional Test, Helium Leak Test, NDT: X-Ray/Ultrasonic/Magnetic Particle, FEA Verification


Key Highlights

Leak-tight at -196°C, long service life, low maintenance, low operating torque, safe for cryogenic fluids, modular & lightweight

 


FIRE SAFE TO API 607, BS 6755

- Body gasket SS 316 and graphite (standard).

- Ball seats on body edge.

- Stem shoulder seats on body.

 

DESIGN FEATURES:

- Meets ASME B16.5,ASME B16.34, API 608, API 598.

- Face-to-face dimensions meet ASME B16.10 long pattern.

- Memory Seal seats compensate automatically for wear and fluctuations

of pressure and temperature. 

       Long cycle life.

       Low torques.

       Blowout-proof stem.

       Stem bearing reduces side thrust.

- Multiple solid PTFE or chevron type stem seal (adjustable).

- Live-loaded thrust washer prevents galling and provide secondary stem seal.

- Fully enclosed spiral wound graphite filled stainless body gasket.

- Air vent on all balls.

Blowout-Proof One-Piece Stem

GEKO' s CRY line of cryogenic valves utilize a one-piece stem that

engages the ball and is secured in the valve cavity with a large, threaded

stem collar that is set-screwed for safety.

A retaining ring threads to the bottom of the stem, which resists from

blowing out.

Once the retaining ring is threaded to the bottom of the stem,

it is set-screwed in place to prevent rotation

 

Stem Seal Design

The valve's stem sealing capability is further enhanced by a welded bonnet

design and V-ring packing that can be adjusted by a simple turn of the stem

nut.The rings of the PTFE V-ring or graph oil packing, which sit on a shoulder

machined on the stem.This allows the packing and stem to move asa unit

during thermal cycles.In addition, the packing is live-loaded, retained by self

compensating Belleville spring washers, and a packing adjustment nut.These

features coupled with close tolerance machining and finish of the packing bore,

provide long stem seal life with reduced maintenance.

 

Fire Tested and Certified to API 607
 
The design includes a fire lip in the innermost diameter of the endplate.

 

 

 

 

  •             Product Brochure
              Ultra low temperature ball valve - English
                                                                        
  •  

  • LNG Industry
    LNG storage tanks, transfer pipelines, and loading/unloading systems.

  • Industrial Gases
    Liquid nitrogen, oxygen, argon, helium, and specialty gases in semiconductor, pharmaceutical, and food industries.

  • Chemical & Petrochemical
    Cryogenic chemical processing, low-temperature reactions, and refrigeration loops.

  • Energy & Power
    Hydrogen storage/transfer for fuel cells, cryogenic applications in nuclear and thermal power plants.

  • Aerospace & Defense
    Rocket propellant handling (LH2, LOX) and cryogenic testing facilities for aerospace components.

  • Marine & Shipping
    LNG-fueled ships, cryogenic fluid transfer in ports and terminals.

  • Research & Laboratory
    Low-temperature experiments and cryogenic fluid control in scientific instruments.

 

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