Rising Stem Ball Valve

Specifications

Confirmed at quote

Size Range: DN50-DN600
Pressure Class: Class 150 to Class 2500
Standards: NACE

Available sizes

Standard DN sizes covered by this product. Confirmed at quote.

DN50 DN65 DN80 DN100 DN125 DN150 DN200 DN250 DN300 DN350 DN400 DN450 DN500 DN600

Configure your variant(manually adjust box on the right if you require a different spec)

Size
Pressure

Materials

All available material options per part. Click a pill to set it in the configurator.

body
ball sealing surface

Approvals

Features

Ball lifts away from seat before rotation, eliminating ball-to-seat friction during opening and closing
Zero downstream leakage achieved by single static seat design
Single seat design avoids pressure build-up associated with double-seated designs
Mechanical wedge seal: inclined surface at base of stem creates wedge force to maintain tight ball-to-seat contact
Self-cleaning: when ball is off seat, medium flows 360° around the sealing surface removing debris
Top entry design allows inline inspection and maintenance after pipeline depressurisation
Dual stem guides ensure smooth linear travel and rotation along guide pins
Injectable packing port on stem for online emission control and maintenance (applicable to models with sealed cover)
All-metal, fire-resistant construction
Hard alloy overlay on ball sealing surfaces, polished for seal integrity
Low operating torque; small handwheel sufficient for most sizes without gearbox
Full-bore and reduced-bore options both maintain high Cv values when open
NACE compliant for corrosive and sulphide stress cracking environments

Notes

Gearbox required for very large sizes
Injectable packing applicable to all models with a sealed cover
Technical specification available as download (content not provided on page)

Description

A rising stem ball valve constructed entirely of metal, designed to operate without friction between the ball and seat during opening and to achieve zero downstream leakage when closed. The valve incorporates a mechanical wedge seal via an inclined stem base and a self-cleaning mechanism whereby fluid flows 360° around the ball sealing surface when the ball is lifted off the seat. It is fire-resistant and rated for extreme temperatures from -196°C to +538°C, with NACE compliance for sulphide stress cracking resistance.