Features & Benefits

  • Class 150 to Class 2500
  • Size Range ½” thru 12” (Class Dependent)
  • 3-Way and 4-Way Configurations (T, L, Double L)
  • 4-Seat Guided Design, Universal Inlet/Outlet
  • Full and Reduced Bore
  • Single Body Construction
  • Fire-Safe Design API 607
  • Blowout Proof, Low Torque Guided Stem Design
  • Anti-Static Device and Live-Loaded Packing
  • Fugitive Emissions ISO 15848
  • Wide Range of Soft Seat and Metal Seat Options
  • A105N, LF2, LF3, Forged Body Options
  • Special Materials Available Upon Request
  • Custom End Connections and Face-to-Face Lengths Available


Certifications & Compliance

Sesto Valves are designed and manufactured to internationally recognized standards including but not limited to the following:

Fire Testing: API 607, API 6FA, BS 6755 Part II

Testing: API 6A, API 598, API 17D, ISO 5208, BS 6755 Part I

Marking: API 6A, MSS-SP-25, PED

Certifications: API607, SIL, NACE, MR0175, PED, Fugitive Emissions, ISO 15848

Partial List of Applications

  • Lease Automatic Custody Transfer units
  • Aerospace Industry
  • Gas Production Facilities
  • Food & Beverage
  • Regasification
  • Chemical Injection Skids
  • Industrial Chemical Processes
  • Cargo and Bunkering Systems
  • Petrochemical Plants

Versatility &  Reliability

The Sesto design allows for the use of all types and materials of construction and may be installed in any flow configuration and orientation.  Our customizable spring configurations and guided seat design gives the option for a carbon steel body and end enclosures with a duplex or stainless seat module.  We have many different metal seated options for a variety of high temperature, corrosive, or abrasive applications.  Our experienced team of engineers can design and build the right valve for your exact requirements. Our precision machined innovative design has been tested to the highest standards and may be used in virtually any application with confidence.  The Sesto Trunnion Multiport Valve is Sil 2 certified, fire tested, FE tested, and built to last.  Reliable repeat performance is our responsibility to you.  It is truly a Premium Italian Valve.

Fire-Safe &
Fugitive Emissions Certified

Packing arrangement is Fire-Safe for critical applications and Fugitive Emissions ISO 15848 certified.

End Connections

Why Sesto?

Precision Machined Forged Body
The forged body eliminates the possibility of leakage due to casting defects. Precision finish machining keeps tight tolerances to ensure secure assembly for high pressure, critical applications.

4-Seat Design Standard
The 4-Seat design effectively isolates the main body cavity from process pressure, minimizing internal leakage and ensuring proper sealing regardless of flow direction.

Ball/Seat Lapping
Lapping the seats to the ball ensures tight tolerances, improving shut-off sealing capability while lowering torque requirements.

Application Specific Testing Protocol
We build upon proven API 598 testing standards and customize our testing protocols to simulate actual service pressure conditions, guaranteeing valve performance before field installation.

Guided Seat Design
The guided seat design allows for flexibility in materials of construction (end closures vs. seats vs. body), customizable spring configurations for specific pressure relief set points, and ease of maintenance. This design also ensures better concentricity between sealing components to improve sealing performance.

Trunnion Multiport Design