Gate Valves Β· Wedge Gate Valves
WCB Cast Steel Gate Valves (K107)
The K107 WCB cast-steel gate execution: DN40 to DN600 at PN10/16 with a WCB body and WCB-plus-2Cr13 sealing faces, internals listed to 570 C and a working-temperature line of -20 to 425 C. It is the general-purpose carbon-steel gate execution for oil, water, steam and gas pipelines that takes over from ductile-iron valves once temperature or pressure leaves cast-iron territory.
Part of the Wedge Gate Valves family
Last updated: 2026-11
Specifications
| size range | DN40-DN600 |
|---|---|
| pressure class | PN10/PN16 |
| body materials | WCB |
| temperature range | -20-425C |
| design standards | ANSI, EN593, DIN 2501 PN6/10/16, DIN3202 F4 |
| seal material | WCB +2Cr13stainless steel |
| stem material | 2Cr13stainless steel |
| body cover plate materials | WCB, WC1, WC6, WC9, C5 C12, ZGCR5MO, ZG1CR18NI9TI, ZG1CR18NI12MO2TI |
| work temperature limit | <=570 C |
| medium | Nitric acid, acetic acid, water, oil, gas and some alkaline liquids |
| trim materials | 2Cr13, 38CrMoal, 25Cr2MoV, 1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti |
| gasket materials | reinforced flexible graphite, 13Cr / flexible graphite, 08 soft steel, 0Cr18Ni9TI, 0Cr17Ni12Mo2Ti |
| packing materials | flexible graphite, reinforced flexible graphite |
| max trim temperature | 570 C |
Application & selection guidance
Choose this execution where the line leaves cast-iron limits but a pressure-seal forged design is not yet required - petrochemical, thermal power and oil-and-gas storage pipelines are the stated applications. The wide body/trim list (WC1/WC6/WC9/C5/C12 and stainless grades) should be matched to medium temperature at quotation, since the 425 C working line governs the WCB grade itself.
Frequently asked questions
What separates a WCB cast-steel gate from a ductile-iron gate?
WCB (ASTM A216) cast steel carries higher pressure-temperature ratings: the page rates working temperature -20 to 425 C, beyond ductile-iron practice, and lists internals to 570 C for high-temperature executions. Body/cover/plate options run from WCB through WC1, WC6, WC9, C5, C12 and stainless grades.
What is the sealing arrangement?
A 2Cr13 stainless sealing face on the WCB seat per the page description; gasketing is flexible-graphite family and the stem is 2Cr13 stainless. Design references are ANSI, EN593, DIN 2501 PN6/10/16 and DIN3202 F4 across DN40-DN600 at PN10/16.
What testing is applied before shipment?
The manufacturer states appearance, material, air-tightness, pressure and shell testing on every unit before leaving the factory; medium compatibility is stated as nitric acid, acetic acid, water, oil, gas and some alkaline liquids.
Ordering & documentation
Documents
Ask for the documentation set you need with the inquiry β typical items for this execution (material certificates, test reports to the listed inspection standard, dimensional drawings) are confirmed and supplied with the quotation.
Quotation
A quotation-ready inquiry states: nominal size and pressure rating, body and seat material preference, end connection, operation, and the service medium with temperature. Typical values on this page are benchmark reference ranges; the binding values are confirmed at quotation.
Sample & supply
Supply terms, order quantities and lead time are agreed per order β state the destination country and required schedule with the inquiry.
Storage & shipping
Store valves with seats and seals protected from UV, ozone and deformation, keep end-face protectors on until installation, and for elastomer- or PTFE-seated executions avoid prolonged outdoor storage β seat compounds age fastest in direct sunlight and freezing conditions.
Knowledge: selection guides
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