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rolling-diaphragm piston Ø33.274 × 22

rolling-diaphragm piston Ø33.274 × 22: crown 6 with a 1/16 in edge radius, Ø3 gland bore through the crown, 3 × M3 tapped (Ø2.5) × 5.5 on Ø18, Ø14 boss with a Ø5 tube socket 8..20 and an M3 grub (Ø2.5) at 18 reached through a Ø3.4 hole in the 2 mm skirt

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

From the full sheet

Rolling-diaphragm piston and retainers for a 2 in head: every size, notes, mating features and sources. What piston and retainer go with a top-hat rolling diaphragm?

Other sizes

• head retainer Ø26 × 2, 0.5 radius on the clamping edge, 3 × Ø3.4 on Ø18, no centre hole
• head retainer Ø26 × 2 with an Ø3 gland bore on centre (the beta's displacer rod runs through it)