Centurion™ Ball Valve

The Alco Centurion valve was initially designed and developed as the primary isolation valve for the loading of natural gas powered public service vehicles. A duty where valve reliability and safety are the primary concerns.

UNI Directional Flow
Servicing Kits
Severe Temp Rating
NACE Approved
Specifications & Ratings
In order to prove the Centurion valves suitability for continuous repetitive operation it was cycle tested to over a million cycles, with the pressure integrity being tested with interim high pressure gas tests. The testing was third party witnessed and verified. This ensures that the Centurion is the optimum valve to select where the requirement calls for a long life maintenance free durable valve. The Centurion can also be fitted with “O” seal flat face type tube connectors.
Valve Types
Single Isolate
Pressure Rating
6000 psi
Temperature Rating
-20°C up to +70°C
Bore Size
Connection Size
1/2" - 1"
  • NPT
  • BSPP
  • BSPT
  • Compression Ended (Single & Twin Ferrule)
  • Threaded
  • NPT
  • BSPP
  • BSPT
  • Compression Ended (Single & Twin Ferrule)
Lever or actuator
Material Options
Materials of manufacture are 316 SS as standard with other material options available.
Material Construction
  • Stainless Steel 316
  • Monel
  • Duplex
  • Super Duplex
  • 6Mo
  • Titanium
  • Hastalloy
  • Zirconium
  • Inconel
  • Incoloy
  • Carbon Steel
  • Ali Bronze
  • Brass
  • Other Materials can be made available upon request
Trim Material
  • Options available upon request.
Bolting Materials
Not Applicable
Material Traceability
Testing & Design Standards
All Alco Valves Group products are designed to comply with or exceed internationally recognised products. API 598 approved tested. The Centurion is designed to ensure the lowest emissions possible.
Testing Standards
API 598
Design Specifications
Fire Safe Standards
Not Applicable
Relevant Approvals
Customer specifications can be adhered to.