Short Description
Trunnion Mounted Ball Valves,Double block & bleed (DBB) with sealing in both directions, Bi-directional, Reduced bore, full bore or fully piggable meeting API 6D.

Key Specifications / Features

Single valve with two seating surfaces that in the closed position, provides a seal against pressure from both ends of the valve,  with a means of venting/bleeding the cavity between the seating surfaces.
 
Features:
Bi-directional, Double block & bleed (DBB) with sealing in both directions
Construction: Three piece bolted body
Stem retention: Anti blow-out stem
Port: Reduced bore, full bore or fully piggable
Leakage rate: ISO 5208 rate A soft seated, rate D metal seated
Antistatic device: Included, the ball valve design includes an electric conductive connection between the internal parts of the ball valve and the body, providing the anti-static function.
Pressure relief: Automatic cavity relief to prevent overpressure in body cavity (self-relieving seats)
 
Sealing:
Metal seated with Tungsten or Chrome Carbide coatings
Primary metal secondary soft (PMSS) with differential hardness between the ball and seat to prevent galling of the substrate
 
Soft seated with thermoplastic polymers (Nylon, PEEK, PCTFE), special polymers upon request
Elastomers FKM, HNBR, EPDM O-Rings, special elastomers upon request.
 
Material testing:
Pressure containing & controlling parts to EN 10204 3.1
Materials in Sour Service according to NACE MR0175, MR0103, ISO 15156
Non-destructive testing (NDT) to API 6D, ASME B16.34
 
Valve testing:
Hydrostatic & pneumatic testing to API 6D, ASME B16.34, ISO 5208 (other upon request)
 
Fluid Served: 
Oil & Gas production, processing, transportation, distribution, Water; isolation, sampling, shutt off.
 

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