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Hawk Valve specializes in the Subsea Valve Market with a range of Ball Valves, Diverter Valves and Hot Stabs available from Piper Valve Systems, Alco Valves Group and HiP.

Piper Valve Systems

Piper introduced its first Subsea Valve in 1998 and is known throughout the industry as one of the most reliable and lowest torque Compact Subsea Valves on the market.


  • Diverter Valves: 10″-18″ ANSI 300 to ANSI 1500
  • Subsea Ball Valves: 1″-10″ ANSI 1500 to API 15000
  • Subsea Check Valves: 1″-12″ ANSI 1500 to API 10000
  • Double Block and Bleed Valves: 1″-10″ ANSI 1500 to API 150000
  • Hot Stabs: 1″-4″ ANSI 2500 to API 15000

Piper’s Subsea Valves are Hyperbaric Chamber tested to 10,000 ft.

Click here to visit the Subsea area of Piper Valve’s website.


High Pressure Equipment Company offers Subsea Ball Valves with working pressure from 10,000 to 20,000 PSI with orifices up to 1/2 inch.


  • Trunion Style Ball Valve
  • PEEK ball seats
  • Two and three way configurations
  • 90° diverter or 180° styles
  • .187″, .375″ and .500″ orifrices
  • Hyperbaric Chamber tested to 10,000 ft.

Click here to download the Subsea catalog from HiP.