Poppet Valve Element
Axially moving poppet head that seals against a conical seat.
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 |
|---|---|---|---|---|---|
| VALA-PPT-04 | 4 | 16 | taper | h7 | 60° seating cone |
| VALA-PPT-05 | 5 | 19.5 | taper | h7 | 60° seating cone |
| VALA-PPT-06 | 6 | 22 | taper | h7 | 60° seating cone |
| VALA-PPT-08 | 8 | 26 | taper | h7 | 60° seating cone |
| VALA-PPT-10 | 10 | 30 | taper | h7 | 60° seating cone |
| VALA-PPT-12 | 12 | 34 | taper | h7 | 60° seating cone |
| VALA-PPT-14 | 14 | 38 | taper | h7 | 45° seating cone |
| VALA-PPT-16 | 16 | 42 | taper | h7 | 45° seating cone |
| VALA-PPT-18 | 18 | 46 | taper | h7 | 45° seating cone |
| VALA-PPT-20 | 20 | 50 | taper | h7 | 45° seating cone |
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
Poppet Valve Element is a Valve Parts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀4–20 mm, lengths 16–50 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 VALA-PPT-20 at 50 mm. Besides turning, the family requires taper turning. 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 VALA-PPT-04: 16 mm long at ⌀4 mm, L/D 4.0. This ratio is achievable on a conventional lathe as well; the sliding-head advantage in series work is that the part never leaves the machine, so the size does not drift from variant to variant.
Variants are machined to h7 tolerance; the smallest is VALA-PPT-04 (⌀4 mm) and the largest VALA-PPT-20 (⌀20 mm). The family includes tapered, 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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