The Severe Service Knife Gate Valve by DSS has a zero-leakage bidirectional design that exceeds specifications set by ASME, API, and MSS up to Class 900.
Its distinctive feature is a guided shear gate which consists of a shearing tip, mechanically retained axial seat, and internal gate guides. The guides completely support the gate through a full stroke and prevent any deflection. The shearing tip with a bevelled edge can cut through solids, fibre, paste, and scale repeatedly and flush them into the pipeline. A primary seal and transverse secondary seal work in tandem to prevent fugitive emissions, leakage, and discharge.
Designed for the harshest abrasive conditions, the DSS SSKGV provides true bidirectional zero-leakage isolation when solids are present in the pipeline. You can choose from a range of material options to handle any corrosive media.
Technical specifications
Brand
Model
Size range
Pressure class
End connections
SP 135 Long, ASME B16.5/B1647
AS 2129 Table D/E
DIN 2501 PN10/PN16/PN25/PN40
Actuator options
Gear operated
Pneumatic
Hydraulic
Electric
Material specifications
Body
Contact us for other materials
Gate
Seat and max temperature
Buna N (-34°C to 121°C)
Chemraz (-28°C to 315°C)
EPDM (-54°C to 129°C)
GFLT Viton (-34°C to 225°C)
Graphite (Depends on valve body materials)
Polyurethane (-34°C to 82°C)
Teflon (-200°C to 260°C)
Viton (-26°C to 225°C)