Item

Standard Features

Optional Features

Size

1" to 18" as standard

Larger as per requirement

Body

Stainless steel 1.4408 (CF-8M)

or 1.4571 (316Ti)

Hastelloy, Monel, Titanium, Nickel, Inconel, Incoloy, etc.

Valve Lining

n/a

PTFE, glass, ceramic or rubber

Inlet

Perpendicular to body

Inlet larger than outlet; same size inlet/outlet; off-set to body; bi-directional inlet/outlet etc.

Outlet

45°, 60° or 90°

Angle per customer requirement

Piston

Stainless steel 1.4571 (316 Ti)

or 1.4541 (321)

17-4PH, hard faced, PTFE and all materials under "Body - Optional"

Disc

Stainless steel 1.4571 (316 Ti)

As piston above

Spindle

Stainless steel 1.4122 (420)

Others are possible on request

Seat

Integrated seat (hard faced)

Replaceable seat, sleeve or ring

Sealing to atmosphere

Stuffing box

Fully enclosed yoke

Temperature

minus 100° to 500° C

Higher or lower on request

Process sealing

Metal to metal

Radial seal; vacuum yoke

Pressure range

All up to ASME 2500 (PN 320)

Higher on request

Connection types

Butt weld end or flanged

Clamp type

Actuators

Manual, hydraulic or electric

Pneumatic

Fire safe

n/a

Fire safe design to BS 6755 Pt. 2*

Heating jacket

n/a

Full or semi jacketing

Surface coating

n/a

Anodising, Canadizing, Titanium

Nitriding, Ceramic and Tungsten

Control Characteristics

On/off(straight or contoured piston)

Linear, equal %, or SchuF gap control (patented control contour)

Add ons

Flushing ports

Integral drain valve, sampling valves,

mechanical lock