Pneumatic Angle Seat Valve, Three Bores

About this model

This page covers one pattern in three bores — DN15, DN20 and DN25. All three take the same pneumatic head: a stainless cylinder sitting on a yoke above the stem, with a cap on top that travels with the stem. Open and closed can be read from outside, so a line check does not mean stripping the actuator off.

The body is angle seat, not inline. Inlet and outlet meet at an angle, so the medium turns once on its way through and the seat sits out of the direct line of the flow. Each body carries its own size, PN16 and CF8M on the side, which is what the marking photo on this page shows — the number you read on the casting is the number on the delivery note.

The end connections differ across the set we photographed. The DN15 piece is female threaded at both ends and ships with red plastic plugs screwed in; the DN20 and DN25 pieces are tri-clamp, with a flat ferrule face for a gasket and clamp. Both arrangements are made on the same body pattern, so tell us the connection you need size by size rather than assuming all three match.

CF8M is cast 316. The molybdenum is what makes it the right choice where the line carries chlorides, dilute acids, cleaning agents or brine; for plain water, steam and air, CF8 (cast 304) is the cheaper grade in the same pattern. Tell us the medium and the line pressure and we quote the grade and the cylinder from that, rather than from a catalogue default.

Design features

• Three bores in one series: DN15, DN20 and DN25
• CF8M (cast 316) body; size, PN16 and grade cast into the side
• Pneumatic cylinder in a stainless housing, mounted on a yoke over the stem
• Top cap indicator — valve position visible without dismantling
• Two air ports on the side of the cylinder
• Female thread or tri-clamp ends, specified per size

Technical data

Size range	DN15, DN20, DN25
Body material	CF8M (cast 316) stainless
Rating	PN16
Body pattern	Y-pattern angle seat
Actuation	Pneumatic cylinder, stainless housing
End connections	Female thread (DN15 sample) or tri-clamp (DN20 and DN25 samples)
Position indicator	Top cap on the cylinder, follows the stem
Air ports	Two ports on the side of the cylinder
Body marking	Size, PN16 and grade, cast into the body side

Applications

• Water treatment — filter, dosing and backwash lines
• Chemical transfer — opening and closing lines carrying chemical liquids
• Filling machines — feed and discharge control on the valve manifold
• General industrial piping — where pneumatic remote operation is wanted

Packing

One PE bag per piece, carton outside. Red plugs in threaded ports, caps on clamp faces, actuator braced against the carton wall. Neutral packing as standard; private label available.

Custom options

Tube and stem lengths outside the standard range, alternative seal materials and private labelling are quoted per order. Send the drawing or the dimensions you need and we will confirm what is possible before quoting.