Features & Benefits

  • Class 150 & Class 300
  • Size Range 1/2” thru 6” Full Bore
  • ISO 5211 Direct Mount Pad
  • Body Wall Thickness ASME B16.34
  • End Connections: RF Flanged
  • Fugitive Emissions ISO 15848
  • Firesafe Tested API 607
  • Anti-Static Device and Live-Loaded Packing
  • Blowout Proof, Low Torque Guided Stem Design
  • Wide Range of Soft and Metal Seated Options
  • Manual, Electric, Pneumatic Operators
  • Globally Certified and Approved


Certifications & Compliance

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

Fire Testing: API 607 Certified

Testing: API 598, API 6D, ISO 15848, B56361, ISO 5208

Design: ANSI B16.34, ANSI B16.5, ANSI B16.10, NACE MR0175, API 608

Markings: MSS-SP-25, PED, NACE

Certifications: API 607, SIL, NACE, PED, ISO 15848


Body: ASTM A216 GR WCB, ASTM A351 CF8M

Ball: ASTM A351 CF8, ASTM A351 CF8M

Stem: 304SS, 316 SS, 17-4PH


Bolts: AISI 304

*Note: All flow wetted SS components are passivated in order to maximize corrosion resistance.

Versatility &  Reliability

The Sesto Valves M15/M30F Series direct mount flanged floating ball valve design starts with a high quality investment cast body, designed and tested in compliance with ASME B16.34 standards.  Precision machined surfaces and tighter manufacturing tolerances allow for precise assembly and fitting of body components and seals.  Because of reduced dimensional variations, seats can be designed for minimal compression.  This results in lower, more consistent torques and longer seat life.  Every valve is factory tested and serialized for quality control and traceability.

Firesafe 2-PC Direct Mount Flanged ANSI Class 150 & 300

ASME B16.34, API 607, API 598  /  ISO 15848, NACE, SIL Torques and Tolerances Verified for Consistency

Why Sesto?

The Sesto 2-PC Class 150&300 flanged ball valves are compliant to ASME B16.34. The wall thicknesses are designed thicker than industry standards. The body gaskets, seats, and stem are much larger than most competitor’s designs.

Investment cast quality body with chemical composition and hardness controlled to meet NACE standards. The sealing areas are machined to a tight tolerance of +/- .002”. This allows for lesser compression on the seat thereby lowering torque.

The precision machining, low seat compression, and oversized stem all work together to give use a consistent low torque design. Our Torques are monitored before each shipment to ensure repeatable, reliable performance. Each valve is tested and serialized to ensure the highest quality.

As with all Sesto Valves the 2-pc direct mount cast ball valve is API607 Fire Tested and certified. The Stem packing design is FE tested. They are NACE and SIL certified with global approvals. The wall thickness design is certified to meet ANSI Class 150 (285 PSI) and to meet the listed pressure marked on the valve bodies.

Flange 2-Piece Design