TOGV - Quarter Turn - TOGV™

Product Brand: Solent & Pratt

Triple Offset Gate Valves

Triple Offset Gate Valve - Metal Sealing with Zero Leakage

  • Firesafe: Certified to BS EN ISO 10497, API 607 4th edition BS6755 Part 2 and API 6FA
  • Sizes: 2” (50mm) to 84” (2100mm)
  • Body styles: Wafer Flangeless, Wafer Lugged, Double Flanged (short and long patterns)
  • Stem: Anti-blowout stem Internal is standard. External to API 609 optional
  • Geometry: Triple Offset, proven non-rubbing motion with 90° rotation
  • Pressure ratings: ANSI 150# through 300#.

Utilizing the latest computer aided design systems and software Solent & Pratt enables special design requirements, dimensions and specifications to be accommodated. The TOGV™ series valves are of dedicated Triple Offset * geometry design. This particular feature eliminates the disc-to-seat rubbing condition, normally associated with 'HPBV' butterfly valves, which induces wear of varying degrees, even in metal seated versions. This is an ideal replacement valve for Ball, Plug or Gate types

Standard TOSV design features include zero leakage with bi-directional shut off to API 598, a field replaceable seat and seal ring for reduced maintenance costs, non-galling design to enable a wide variety of marterial options, with options for live loaded packing and arduous duty bearing protectors.


Tested Standards

Solent & Pratt utilizes the latest computer aided design systems and software enabling special design requirements, dimensions and specification to be accommodated. Valves are built and tested to the following standards:

  • Quality assurance: Certified by Lloyds to ISO 9001
  • Valve design: ANSI B16.34
  • Fire test: BS EN ISO 1049, API 607 4th edition, BS 6755 Part 2 and API 6FA
  • Face to face: ANSI B16.10
  • Flange ANSI B16.5 (2” to 24”), ANSI B16.47 (28” and larger)
  • Testing: BS 6755 Rate A, API 598, API 6D

Material Range
Valve design range is available in most other materials

  • 316 stainless steel
  • Duplex stainless steels
  • 6 Mo stainless steel
  • Bronze
  • Monel
  • Incoloy
  • Hastelloy B and C
  • Titanium
  • Zirconium
Theory of Operations

Patented Two direction valve geometry

The Solent & Pratt Triple Offset Segment Valve utilizes the well established valve geometry where the shaft is offset from the body in two directions (1) and (2), whilst the disc is a segment taken from a cone where the apex is offset from the center line of the valve (3). The disc (segment) of the valve houses a field replaceable metal laminate seal whilst the field replaceable seat ring is housed in the body of the valve.

Due to the valve geometry there is no interference or rubbing between seat and seal as the valve strokes through it’s full 90°.

Features and benefits
Feature Description
Replaceable seat and seal Triple Offset Geometry with field replaceable seat and seal rings
Zero leakage Bi-directional shut-off to API 598, zero leakage capability
Resilient metal seat Torque generated resilient metal sealing provides repeatable long term sealing performance
Firesafe The valve design range is certified Firesafe to BS EN ISO 10497, BS 6755 : Part 2 and API 6FA : API 607 4th edition
Steam Jacket Integral steam jackets are available on the Double Flanged body design
Face-to-face TOGV is available with face-to-face dimensions to ANSI B16.10 enabling easy replacement of ball, plug and gate valves
Ease of material selection No galling is possible with this design making material selection simple
Sizes 2” (50mm) to 24” (600mm).
Temperature range to up to 1292°F (700°C)
Pressure Ratings ANSI 150# through 300#.
Torque Under high pressure (14.5Bar/210psi) the torque required to operate the valve was 160 N.M
Seal Temperature During test burn period, where temperatures reached 1652°F (900°C) the high integrity metal/metal seal still ensured tight shut off
Bearing Protector Enables arduous duty applications where solids may be present in the flow media.
Live Loaded Packing A set of Belleville spring washers fitted to the gland follower provides automatic adjustment to packing.
Steam Jacket Integral steam jackets are available on the Double Flanged body design
Latern Ring Available for the packing box
Ease of actuation Rotary action of the valve enables ease of actuation and suitability for either control or isolation
Superior gland performance Rotary motion valves greatly reduce fugitive emissions from gland packing. In addition gland packing life is considerably improved
TOGV -  Quarter Turn - TOGV™
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