Special Purpose Pressure Vessels,
Reactors and Autoclaves

Supporting Industry and Research

Pressure Vessel Closures


KW Designed Solutions Pressure Vessel Closures are available in many forms.  As well as the standard types commonly used in industry (Threaded & Bolted), we also offer an advanced range of quick-acting Pressure Vessel Closures, innovatively engineered and continually improved over the years to simplify the opening and closing function of the Vessels.  These Quick Acting Pressure Vessel Closures are useful for customers who have a specific set of operating conditions or conduct Production FATs with short test times and require quicker, more repetitive access.

They are generally specified for the medium to larger pressure vessels, offering closure guidance, safety locking mechanisms and attachments for safe handling.

All our Pressure Vessel Closures come with various sealing options with varying pressure and temperature ratings.  Whether it’s a bespoke design or chosen from our line of existing products, KWDS aims to provide the perfect solution.

Breech Lock Closure Vessels

Breech Lock Closure Vessels 1/16th turn quick acting closure for improved production through-put

  • Pressure ratings: 100 bar to 2069 bar
  • Temperature: -50°C to 200°C
  • Size: Between Ø100mm to Ø1000mm bore and depths of 200mm to 4000mm
  • Volumes: 1 litre to 3000 litre
  • Seal Types: O seal with back-up-ring, Spring seal, various more options
  • Material of construction: Stainless steels, carbon and alloy steels
  • Opening/closing times: 2 minutes to open/close, 5 seconds to lock/unlock

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Bolted Closure Vessels

Bolted Closure Vessels Tried and tested option of closure style, providing users with a simple, robust & low cost option

  • Pressure ratings: 6 bar to 2069 bar
  • Temperature: -196°C to 650°C
  • Size: Between Ø50mm to Ø1000mm bore and depths of 100mm to 2000mm
  • Volumes: 0.25 litre to 1500 litre
  • Seal Types: O seals, PTFE, gaskets, metallic seals (BX Rings, C-Rings)
  • Material of construction: Stainless steels, exotic steels (Hastelloy, Inconel), carbon and alloy steels
  • Opening/closing times: From 5 minutes to 1 hour depending on the vessel size and number of bolts

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Threaded Closure Vessels

Threaded Closure Vessels Quick and easy access for small to medium sized vessels – a quicker option to bolting

  • Pressure ratings: 50 bar to 3000 bar
  • Temperature: -50°C to 250°C
  • Size: Between Ø25mm to Ø400mm bore and depths of 50mm to 2.5mm
  • Volumes: 50 ml to 250 litre
  • Seal Types: O-Ring & Back-up-ring, PTFE, Spring seal, bespoke design
  • Material of construction: Stainless steels, exotic steels (Hastelloy, Inconel), carbon and alloy steels
  • Opening/closing times: From 1 minute to 10 minutes depending on size and pressure rating

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Segmented Clamp Closure Vessels

Segmented Clamp Closure Vessels Threadless option for quick and easy access into vessel (Quicker option to bolting)

  • Pressure ratings: 50 bar to 3000 bar
  • Temperature: -20°C to 300°C
  • Size: Between Ø75mm to Ø400mm bore and depths of 150mm to 2000mm
  • Volumes: 0.5 litre to 250 litre
  • Seal Types: O seal, PTFE, Metallic Seals (BX Rings, C-Rings, Metal Seal Rings)
  • Material of construction: Stainless steels, exotic steels (Hastelloy, Inconel), carbon and alloy steels
  • Opening/closing times: 2 minutes to open/close, 10 seconds to lock/unlock

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Actuated Chock Closure Vessels

Actuated Chock Closure Vessels Automated, quick acting push button closure for improved production through-put

  • Pressure ratings: 200 bar to 690 bar
  • Temperature: -20°C to 200°C
  • Size: Between Ø500mm to Ø1800mm bore and depths of 1000mm to 7500mm
  • Volumes: 200 litre to 20,000 litre
  • Seal Types: O seal with PTFE back-up-ring or Springsele®,
  • Material of construction: Stainless steels, carbon and alloy steels
  • Opening/closing times: 2 minutes to open/close, 20 seconds to lock/unlock

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Manual Chock Closure Vessels

Manual Chock Closure Vessels Robust manual semi-quick acting closure where chocks replace bolts

  • Pressure ratings: 100 bar to 690 bar
  • Temperature: -20°C to 200°C
  • Size: Between Ø400mm to Ø750mm bore and depths of 800mm to 2500mm
  • Volumes: 100 litre to 1000 litre
  • Seal Types: O seal with PTFE back-up-ring
  • Material of construction: Stainless steels, carbon and alloy steels
  • Opening/closing times: 3 minutes to 5 minutes

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Pinned Closure Vessel

Pinned Closure Vessel Quick-acting closure for improved production through-put

  • Pressure ratings: 100 bar to 2000 bar
  • Temperature: -50°C to 200°C
  • Size: Between Ø50mm to Ø200mm bore and depths of 100mm to 2000mm
  • Volumes: 0.5 litre to 100 litre
  • Seal Types: O seal with back-up-ring, PTFE, Springsele®
  • Material of construction: Stainless steels, carbon and alloy steels
  • Opening/closing times: 2 minutes to open/close, 20 seconds to lock/unlock

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Bayonet Lock Closure Vessels

Bayonet Lock Closure Vessels Robust manual semi quick-acting closure where chocks replace bolts

  • Pressure ratings: 100 bar to 1500 bar
  • Temperature: -20°C to 200°C
  • Size: Between Ø100mm to Ø300mm bore and depths of 200mm to 1000mm
  • Volumes: 1 litre to 1000 litre
  • Seal Types: O seal with PTFE back-up-ring
  • Material of construction: Stainless steels, carbon and alloy steels
  • Opening/closing times: 1 minute to open/close, 5 seconds to lock/unlock

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kw designed solutions

Tel: +44 (0) 1257 474 507

KW Designed Solutions Ltd, KW Group, Drumhead Road, Chorley North Business Park,
Chorley, Lancashire PR6 7DE. United Kingdom.

Designed and manufactured in the UK Designed and manufactured in the UK.