ANSI Knife Gate Valve DN500

A knife gate valve comprised a two-piece valve body, a knife gate, an elastomeric transverse seal, an elastomeric perimeter seal, and a pair of elastomeric liners. Each elastomeric liner is positioned between the knife gate and one of the mating valve body halves and defines a chamber for receiving the perimeter seal. Each liner has a port that corresponds to the flow channel, a sealing portion that extends into a sealing chamber to cooperate with the transverse seal, and an orifice liner extension that lines the orifice of the corresponding valve body half. O-rings, preferably of a softer material than the elastomeric liner, may be positioned on the outer rim of the orifice liner extensions for creating a seal among the elastomeric liner, the corresponding valve body half, and a corresponding mating flange of a fluid handling system.

Specification of knife gate vale

Standard: ANSI (can be other standard GB/T9113, , JIS、DIN、)

Pressure: 150lb

Material: cast steel,

DN: NPS 2"-20"

Connection Model: Lug Type, Flange Type, Wafer Type

Drive: hand, electrical, pneumatic

Suitable temperature: -38-+650℃

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