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The SVS series valves are engineered for subsea service and ROV intervention with all ShearFlo® sealing advantages to ensure zero leak and contamination resistant operation. Reliability and high performance are mandatory when working in the world’s most corrosive natural environment.

PacSeal Hydraulics’ subsea valves feature a load-balanced rotor shaft, which assures smooth rotary operation in deep water during internal and external pressure differential.

Four basic handle options (Tee, Paddle, Straight and None) can be customized to meet special requirements. The “None” option is a square-ended shaft for a customer-fitted intervention fixture.

If our product specifications do not meet your application, contact PacSeal today for customization.


  • Made in the USA
  • Corrosion resistant external components are sealed to prevent sea water exposure to the valve’s interior.
  • Various handle options are offered for ROV or manual operation, which may be custom or conforming to API RP-17H.
  • ShearFlo® sealing technology ensures a high cycle life and anti-wear design that is suitable for critical service applications, including contaminated fluids with high flow rates.
  • An essentially zero leak, contaminant resistant metal-to-metal seal for the valve is accomplished by lapping and polishing hardened stainless steel sealing elements to exacting standards of finish and flatness.
  • The sealing elements are spring preloaded and pressure energized, which maintains contact between the two sealing surfaces at all times to prevent contaminants from causing leaks and damage.
  • Movement between the sealing surfaces maintains the lapped, flat surface to ensure a long life that renews with use.
  • Standard rotor configurations yield lubricated shifting with fluid interflow that is drained to tank through the constantly open return port.
  • All SV valves are tested to PacSeal’s strict quality control standards to ensure proper function and reliability.
  • Every ShearFlo sealing component in a repair kit is inspected to ensure trouble-free performance after field maintenance and repair



  • Subsea ROV Control Panels
  •  Offshore Drilling and Production
  • Offshore Subsea Service
  •  Seabed Mining and Dredging


Performance Specifications


SVS-25 SVS-50 SVS-100 SVS-150
Cv .95 3.2 9.2 21.0
Rated Flow (gpm) 10 30 75 180
Working Pressure (psi) 3000/6000 3000/6000 3000/6000 3000
Proof Pressure 1.5x Working Pressure
Burst Pressure 2x Working Pressure
Temperature Rating -40 to 250°F
Fluid Media Hydraulic Oil or Lubricated Water2
Ports (SAE ORB) 1/4″ (#4) 1/2″ (#8) 1″ (#16) 1-1/2″ (#24)
Port Location1 Bottom Bottom Bottom Bottom
1Custom porting and location options are available.

2For water-based media, special alloy seal rings may be required for optimum performance and durability. Contact PacSeal Hydraulics at (714) 529-9495 for details.

Material Specifications

Material Specifications
External components exposed to sea water 316 SS
Internal sealing components Hardened Stainless Steel1
Internal non-sealing components Stainless Steel, Carbon Steel and Bronze
O-rings Buna-N, Viton or EPR
Back-up Rings Teflon
1For water-based media, special alloy seal rings may be required for optimum performance and durability. Contact PacSeal Hydraulics at (714) 529-9495 for details.

Model Configurator and Ordering Instructions

Ordering instructions


Installation drawings indicated in blue are available for download.

Models in table below are by special order. Contact PacSeal Hydraulics for availability and specific requirements.

Part # Model # Rotor Flow Handle
40-2122 SVS25-3A0SN All Blocked Straight
40-2170 SVS25-3A0PN All Blocked Paddle
40-1949 SVS25-6S1SN Selector Straight
40-1961 SVS25-6M1SN Manipulator Straight
40-2529 SVS50-6A1SN All-Blocked None
40-2911 SVS50-3C5PN 6-Way Shutoff Paddle
40-2912 SVS50-3C4PN 4-Way Shutoff Paddle
40-2913 SVS50-3A2PN All Blocked Paddle
40-2928 SVS50-3M3PN Manipulator Paddle
40-1959 SVS100-6C2SN Shut-Off Straight
40-4059 SVS100-6B2QN Bypass None

PacSeal Hydraulics

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