Valve Spool Piston
Stepped spool piston that opens and closes flow paths in directional valves.
Manufacturing Scope
Valve Spool Piston is a Valve Parts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀4–20 mm, lengths 28–102 mm, standard material Stainless Steel (also steel, stainless, brass or aluminium). Every variant's part code, dimension and tolerance is listed below; request an instant quote with the code you need.
The family is machined from ⌀20 mm bar stock; its longest variant is VALA-SPL-20 at 102 mm. The family is produced by turning alone. All of it is completed in a single setup, without the part leaving the machine.
The most slender variant is VALA-SPL-04: 28 mm long at ⌀4 mm, a length-to-diameter ratio of 7.0. A part this slender needs tailstock support on a conventional lathe. On a sliding-head lathe the guide bushing holds the bar right next to the cutting edge, so the part is machined without a centre.
Variants are machined to h6 tolerance; the smallest is VALA-SPL-04 (⌀4 mm) and the largest VALA-SPL-20 (⌀20 mm). The family includes multi-step variants. Custom sizes, tolerances or materials are produced to the part code on request.
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 | Dia ⌀ | Length | Feature | Tolerance | Std | Unit price |
|---|---|---|---|---|---|---|
| VALA-SPL-04 | ⌀4 | 28 mm | 5 steps | h6 | 3-land spool | 44.82 ₺ |
| VALA-SPL-05 | ⌀5 | 33 mm | 5 steps | h6 | 3-land spool | 49.83 ₺ |
| VALA-SPL-06 | ⌀6 | 38 mm | 5 steps | h6 | — | 58.76 ₺ |
| VALA-SPL-08 | ⌀8 | 46 mm | 5 steps | h6 | — | 70.27 ₺ |
| VALA-SPL-10 | ⌀10 | 56 mm | 5 steps | h6 | — | 86.75 ₺ |
| VALA-SPL-12 | ⌀12 | 66 mm | 5 steps | h6 | — | 106.69 ₺ |
| VALA-SPL-14 | ⌀14 | 74 mm | 5 steps | h6 | — | 134.18 ₺ |
| VALA-SPL-16 | ⌀16 | 82 mm | 5 steps | h6 | — | 160.13 ₺ |
| VALA-SPL-18 | ⌀18 | 92 mm | 5 steps | h6 | — | 194.69 ₺ |
| VALA-SPL-20 | ⌀20 | 102 mm | 5 steps | h6 | — | 235.57 ₺ |
Stainless Steel · for 100 pcs · estimated unit price, valid 7 days · excl. VAT · Contact us for a firm quote.
Material & Tolerance
The standard material is listed below; also available in steel, stainless, brass and aluminium. Dimensions in mm; tolerances machined to ISO. For custom sizes/tolerances, contact us with the part code.
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