Skip to content

SHEARFLO® LSV DIRECTIONAL CONTROL VALVES (GREASE VALVES)

PacSeal Hydraulics’ linear LSV control valves are designed with ShearFlo® metal-to-metal sealing technology to ensure high cycle life and negligible internal leakage with superior contaminant resistance, making these valves perfectly suited for critical service applications in harsh and hazardous environments. Although the LSV was originally designed for grease injection of frac tree valves, any application is suitable requiring long term, reliable and leak free operation.

If a grease line check valve fails, the line may experience high-velocity and high-pressure backflow that has the potential to damage upstream components. When needle valves fail, they remain open and inherently cannot seal back-pressure. This makes upstream components vulnerable to damage.  If backflow occurs, the PacSeal Grease Valve is failsafe closed with the spring return, which will protect itself and all components upstream from it.  The backflow stops at the PacSeal Grease Valve because it seals from both directions.

These valves have instantaneous hydraulic or pneumatic actuation (remote only) via direct or solenoid valve piloted, spring return single-acting, or double-acting.

Fluid flow is directed one-way with two-positions: on or off. There are two available sizes based on the working pressure: 1/2″ NPT/SAE and MP LF9 (9/16″) for 5000 psi and 20,000 psi working pressure, respectively.

Subsea and topside/splash zone options coming soon!

Every component of all control valve sizes are manufactured in the USA. While each linear control valve that leaves our facility is inspected, tested, and serialized to ensure optimum performance for your hydraulic control system. When we do receive feedback from our customers, it is to report their utter surprise for the hundreds of thousands of cycles they are able to achieve with no problems.

The footprint and complexity of a hydraulic control system may dramatically be reduced with PacSeal Hydraulics’ patented integral manifold.

Features

  • Made in the USA
  • 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.
  • All LSV 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.
  • Guaranteed as the most dependable directional control valve on the market that will outlast every other component in your hydraulic control system.
  • Specified by the best and most trusted BOP (Blow Out Preventer) unit builders all over the world.

Applications

  • Frac Tree Grease Valve Injection systems

Options

 

Remote Operation

 

LSV-30 Single Acting Spring Return with Hyd. Solenoid Valve Pilot
LSV-30 Double-Acting with Hyd. Solenoid Valve Pilots
LSV-30 Single Acting Air Direct Piloted with Spring Return

 

Body Porting Options

 

Front ported available with MP LF9 (20,000 psi) and 1/2″ NPT or SAE (5,000 psi) threaded ports.

LSV-30 with MP LF9 Ports
LSV-25 with 1/2 NPT or SAE Ports

Manifold Mounted

LSV-30 12-Station Manifold Assembly with MP LF9 Ports
LSV-25 6-Station Integral Manifold with 1/2 NPT or SAE ports

 

PacSeal Hydraulics

Install Pac Seal Hydraulics

Install this application on your home screen for quick and easy access when you’re on the go.

Just tap then “Add to Home Screen”