What should be confirmed before ordering?

Confirm the model, DN size, body/gate material, seat material, pressure class, flange standard, medium and actuator option against the selected catalog drawing.

Does one series cover all materials and sizes?

No. Materials, dimensions and pressure limits depend on the exact model suffix and DN size shown in the catalog material and dimension tables.

Can an actuator be supplied?

Manual, pneumatic, electric and other actuation options are catalog-dependent. Confirm the actuator type, control mode and mounting details for the final valve selection.

Which documents should be requested?

Request the current dimensional drawing, material list, inspection requirement and final technical confirmation for the selected model and size.

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Bi-directional Self-Sealing Knife Gate Valve, DN50-800, PN10

Industrial Valves & Actuators Gate Valves

Gate Valves

Bi-directional Self-Sealing Knife Gate Valve, DN50-800, PN10

Bi-directional self-sealing flanged knife gate valve in ductile iron.

Quick Specifications

Type Knife gate valve

Series QW Series

Seal Direction Bi-directional

Configuration Flanged, self-sealing

Connection Flanged

Operation Manual, pneumatic, electric, gear

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Product Overview

A bi-directional self-sealing knife gate valve in ductile iron (GGG40) body for slurry, pulp, sludge and wastewater service. Available in manual and pneumatic configurations.

Parameter	Value
Model / Series	QWZ73NR
Product Family	Knife Gate Valve
Catalog Name	Bi-directional Self-Sealing Knife Gate Valve
Size Range	DN50 - DN800
Pressure Rating	PN10 (measured 1.6 - 0.3 MPa)
Body / Main Material	GGG40 (ductile iron)
Seat / Seal Material	Gate SS304; Stem 2Cr13; Yoke Q235
End Connection	Flanged (wafer-style body with bolt holes)
Actuation	Handwheel, pneumatic, gear, electric
Typical Application	Slurry, pulp, sludge, mining and wastewater applications

Bi-directional Self-Sealing Knife Gate Valve, DN50-800, PN10

Quick Specifications

Product Overview

Q: What should be confirmed before ordering?

Q: Does one series cover all materials and sizes?

Q: Can an actuator be supplied?

Q: Which documents should be requested?

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Bi-directional Through-type Knife Gate Valve, DN50-2000