Sempell Model 142 High Pressure Water Control Valve

Specially designed low-maintenance control valves for a wide range of applications in water circulation.

Specs

Size:

1� – 6�

Pressure class:

Class 3000

Body material:

A105
A182 F12 / A182 F22 special design

Trim material:

Stem 1.4057 / 1.4122 (17% Cr steel)
Cages 1.4057 / 1.4122 (17% Cr steel)
Seat ring 1.4057 / 1.4122 (17% Cr steel)

Stem sealing:

PTFE (up to 480°F), pure graphite

Plug design:

A–type – parabolic Flow To Close (FTC)
L–type – multistage Flow To Close (FTC)
X–type – single stage Flow To Open (FTO)

Characteristic:

Equal percent (square, linear on request)

Control ratio:

Standard 1:40

Sealing seat/plug:

Metallic

Leakage class:

ANSI / FCI 70–2 class V DIN EN 12266–2 class B

Modular design.
The valve is suitable for continuous operation.
Good adjustment to the task by narrowly staged Cv–value–series and large control ratio.
Trims can be changed easily while valve is welded into pipe.
Different plug types available.
Minimized wear and tear through separation of sealing and control area at high Δp.
Different actuator types can be used.
With low–friction PTFE packing at design temperatures ≤ 480°F.
Resistant for standard pickling process.
The stem nut can be re–lubricated during operation.
Thermal expansion by high temperature differences at stem will be balanced by cup spring in yoke head.