Valve Seat (Conical Sealing Face)
Precision seat body with a conical sealing face where a needle or ball valve seats.
This is a dimension schematic, not a manufacturing drawing. Dimensions match the catalog data; request a quote with the part code to confirm before production.
Code & Size Table
Code, dimensions and tolerance for all 10 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| VALB-SET-04 | 6 | 10 | taper · ⌀1.5 | H6 | 60° seat cone |
| VALB-SET-05 | 7 | 11.5 | taper · ⌀2 | H6 | 60° seat cone |
| VALB-SET-06 | 8 | 13 | taper · ⌀2.5 | H6 | 45° seat cone |
| VALB-SET-08 | 10 | 16 | taper · ⌀3 | H6 | 45° seat cone |
| VALB-SET-10 | 12 | 18 | taper · ⌀4 | H6 | 45° seat, ball valve |
| VALB-SET-12 | 14 | 20 | taper · ⌀5 | H6 | 30° seat cone |
| VALB-SET-14 | 16 | 22 | taper · ⌀6 | H6 | 30° seat cone |
| VALB-SET-16 | 18 | 25 | taper · ⌀7.5 | H6 | 30° seat, needle valve |
| VALB-SET-18 | 20 | 28 | taper · ⌀9 | H6 | 30° seat cone |
| VALB-SET-20 | 20 | 31 | taper · ⌀10.5 | H6 | 20° precision seat |
Prices are for approved members.
Material & Tolerance
The standard material is listed below; also available in steel, stainless, brass and aluminium. Dimensions in mm; tolerances machined to ISO. Deviations (mm) are given for the nominal diameter according to the ISO 286-2 tables; thread tolerances (6g/6H) are to ISO 965. For custom sizes/tolerances, contact us with the part code.
Manufacturing Scope
Valve Seat (Conical Sealing Face) is a Valve Parts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀6–20 mm, lengths 10–31 mm, standard material Stainless Steel (also steel, brass or aluminium). Every variant's part code, dimension and tolerance is listed below; request a quote with the code you need.
The family is machined from ⌀20 mm bar stock; its longest variant is VALB-SET-20 at 31 mm. Besides turning, the family requires taper turning. Bores in this family run ⌀1.5–10.5 mm. All of it is completed in a single setup, without the part leaving the machine.
The variant with the highest length-to-diameter ratio is VALB-SET-04: 10 mm long at ⌀6 mm, L/D 1.7. A short, rigid body: what governs the result here is not deflection but diameter tolerance and surface finish.
Variants are machined to H6 tolerance; the smallest is VALB-SET-04 (⌀6 mm) and the largest VALB-SET-20 (⌀20 mm). The family includes tapered, bored, multi-step variants. Custom sizes, tolerances or materials are produced to the part code on request.
Need a size that isn't listed? We machine to your drawing — CNC contract machining. How these parts are made: What is a Swiss-type lathe?
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