Series 20
Knife Gate Valve
The Grey49 Series 20 is our BI-DIRECTIONAL Knife Gate valve, featuring a large resilient ‘perimeter seat’ with open bore geometry for uninterrupted flow.
A heavy-duty resilient seat is mechanically retained within the valve bore. Its wide cross-section and low-profile design provide low turbulence and excellent durability in mild to moderate service.
Grey49 gates are engineered to withstand process conditions and line pressures with several material options and hardness ratings. Machined surfaces also ensure proper fitment and closure.
The custom-fabricated valve body is precision welded to form a robust ‘one-piece’ component. This unibody design eliminates potential leak paths, body splitting, and assembly misalignment.
Braided square packing materials are application-specific and stacked within a machined packing gland, providing exceptional sealing. Our engineers may specify optional scrapers when appropriate.
The valve bore is engineered to match the pipe I.D., whether it is Schedule 40 or heavy-duty rubber lined. There are no gate pockets, and flow passes through with minimal turbulence.
Grey49 bodies are custom fabricated with robust flanges and drilled/tapped flange holes. This allows for several installation orientations, including ‘dead-end’ service (no downstream piping needed).
Our valves are manufactured in-house, with mounting plates designed to accommodate any actuator type, brand and model. We also work with clients to provide 'bare stem' valves.
