Knife Gate Valves · Customisation & quotation guide
Requesting a Quote for Knife Gate Valves
A knife-gate quotation is driven by the media it must cut through and the seating direction it must hold. Slurry, pulp and solids-laden service change the gate edge and seal choice, so the parameters below — not just size and class — decide the quote.
Last updated: 2026-10
Required inquiry parameters
An inquiry that states these values is quotation-ready — selection can start without a second round of questions.
| Parameter | Why the quote needs it |
|---|---|
| Medium | Slurry, pulp or clean fluid decides the gate edge, seat design and seal material. |
| Temperature | Seal and seat elastomers have temperature ceilings that size the execution. |
| Pressure | Knife gates are typically low-to-medium pressure; the class must match the line rating. |
| Size | Nominal diameter fixes the wafer dimensions and actuation torque. |
| Connection | Wafer, lug or flanged end type must match how the valve bolts into the line. |
| Sealing direction | Uni-directional and bi-directional executions differ in seat design — state the duty. |
Standard ranges and custom options
Published reference ranges for this family, with the question to ask for each dimension when the requirement sits outside the span. Non-standard requirements are confirmed during quotation.
| Dimension | Published range | If non-standard, specify |
|---|---|---|
| Size | DN50 to DN450 | Large or non-standard wafer/lug dimensions beyond the published span |
| Pressure class | PN10 (Class 150 body option in collected tables) | Low-pressure slurry service vs higher-class utility applications |
| Body materials | Carbon steel, Ductile iron, SS316 | Special alloys for corrosive slurries beyond the standard cast set |
| Seal materials | Polyurethane, EPDM, NBR, VITON | Elastomer selection versus media chemistry and temperature |
| End type | Wafer type, Lug type | Wafer, lug or flanged by-face dimensions to match existing pipework |
| Temperature range | -20°C to 80°C | Hot slurry or high-temperature service beyond the published span |
| Operation | Handwheel, Electric actuated, Pneumatic actuated | Actuation, stem configuration and mounting bracket/drive interface |
| Design standards | MSS SP-81 | Face-to-face and testing standards the project specification calls out |
Drawings and documentation
What to attach to the inquiry — and what to ask for back with the order confirmation.
Service description
Media with solids content, particle size and abrasiveness — this decides gate edge and seat design.
Operating conditions
Pressure, temperature, flow direction and whether bi-directional sealing is required.
Installation data
Wafer, lug or flanged mating dimensions and the pipework standard the valve must fit.
Actuation requirements
Manual, pneumatic or electric operation, plus any stem extension or mounting-bracket interface.
Documents to request with the order
General arrangement drawing and test documentation — availability confirmed with the quotation.
Lead time, MOQ and pricing
Supply terms are quoted per inquiry — size, class, materials and certification scope all move them, so they are confirmed rather than published as generic figures.
| Lead time | Contact for confirmation |
|---|---|
| Minimum order quantity | Contact for confirmation |
| Price and validity | Contact for confirmation |
Frequently asked questions
What is the minimum information for a knife-gate-valve quote?
Media and solids content, size, pressure class, end type, sealing direction, temperature and operation. A quote prepared with these can be selected without a second round of questions.
Can non-standard sizes or materials be quoted?
Requirements outside the published reference ranges are confirmed during quotation. Describe the service and the installation interface; the quote response confirms what is available.
How are lead time and MOQ handled?
Lead time and minimum order quantity depend on size, materials and actuation scope and are provided per inquiry — contact for confirmation rather than relying on a generic figure.
Ordering & documentation
Documents
Ask for the documentation set with the inquiry — typical items (material certificates, test reports to the listed inspection standard, dimensional drawings) are confirmed and supplied with the quotation.
Quotation
Send the medium, temperature, pressure, size and connection for a quotation-ready inquiry. Lead time, MOQ and price are confirmed at quotation, together with the documents to be supplied with the order.
Sample & supply
Supply terms, order quantities and lead time are agreed per order — state the destination country and required schedule with the inquiry.
Storage & shipping
Store valves with seats and seals protected from UV, ozone and deformation, and keep end-face protectors on until installation; storage limits and shipping arrangements for the selected materials are confirmed at quotation.
Knowledge: selection guides
Ready to request a quote for knife gate valves?
The inquiry form is on the Knife Gate Valves product page — submit the parameters above there, answered with selection, documents and terms.