API · ASME · DIN · EN standard industrial valves
Non-Rising Stem Gate Valves
Non-rising stem gate valves rotate the stem in place so the wedge travels along the stem thread without the stem rising — the compact choice for buried service, chambers and tight headrooms where no stem extension can be tolerated, with position read from the number of turns. The range covers DN50 to DN600 at PN16 to PN40, with carbon-steel body and bonnet, carbon-steel disc faced with EPDM, stainless stems, EPDM sealing rings, O-rings and bonnet gaskets (graphite option), brass/bronze stem nuts and brass holding rings, ductile-iron handwheels, BS 5163 design, manufacture and face-to-face dimensions, EN 1092 flange ends, and a full PN16 dimension table (length, flange diameters, thickness, bolt pattern) from DN50 to DN600. Selection turns on the buried-versus-above-ground headroom decision, the BS/EN flange standard of the network, and resilient-seat duty against the medium.
Part of the Gate Valves family
Last updated: 2026-10
Family specifications
| size range | DN50 to DN600 |
|---|---|
| pressure class | PN16 to PN40 |
| body materials | Carbon Steel |
| disc materials | Carbon Steel+EPDM |
| stem materials | Stainless Steel, Inox |
| end connections | EN1092 |
| design standards | BS5163 |
| face to face | BS5163 |
| bonnet gasket materials | EPDM, Graphite |
| sealing ring materials | EPDM |
| stem nut materials | Brass, Bronze |
| handwheel materials | Ductile Iron |
| wR size | DN400 |
| wR pressure rating | PN40 |
| wR body bonnet material | GS-C25 |
| wR wedge material | GS-C25 |
| wR seat material | ASTM A105 + 13Cr |
| wR bonnet design | Bolted bonnet (BB) |
| wR port | Full port, reduced port |
| wR back seal design | Back seal |
| wR stem design | Non-rising stem |
| wR seat options | Renewable seat, welding seat |
| wR special options | locking device (interlock), position indicator, limit switch |
| wR extended bonnet | Extended bonnet for cryogenic & underground service is available. |
| wR design standard | DIN 3352, EN 10434 |
| wR face to face | DIN 3202, EN 558 |
| wR flanged ends | DIN 2543-2545, EN 1092 |
| wR test standard | DIN 3230, EN 12266 |
| wR pressure temperature standard | DIN 2401 |
| cD size range | 1/4" to 3" |
| cD pressure rating | PN25 |
| cD end connections | Taper threaded to BS EN 10226-2 (ISO 7-1) formerly BS 21 |
| cD body material | Bronze |
| cD stem design | Non-rising stem design to minimise installation height |
| cD bore | Full bore |
| cD body bonnet disc materials | low lead content bronze, typically 4-6% |
| nR size range | 1-1/2"~48" (DN40~DN1200) |
| nR pressure rating | ASME CLASS 150 ( PN10/16/25) |
| nR body materials | Cast iron, Ductile iron, Carbon steel, Stainless steel, DSS, SDSS |
| nR end connections | RF, FF |
| nR operation | Manual, Gear drive, Pneumatic, Electric |
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.
Frequently asked questions
What standards govern the design and testing of non-rising stem gate valves?
The published specification for this family lists BS5163 as the design standards.
What sizes and pressure ratings are available for non-rising stem gate valves?
The published size range is DN50 to DN600, and the published pressure ratings are PN16 to PN40. Availability of a specific size and rating is confirmed at quotation.
What materials are non-rising stem gate valves available in?
The published specification lists body materials: Carbon Steel. Material availability for a specific size and rating is confirmed at quotation.
What end connections do non-rising stem gate valves support?
The published specification lists EN1092 as the available end connections. The connection for a specific size is confirmed at quotation.
What should a quotation inquiry for non-rising stem gate valves include?
The governing standard and class, nominal size, body and seat materials, the service medium with temperature, and the destination — anything missing is confirmed during quotation.
Knowledge: selection guides
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