Schroedahl DU-Series

Specialized pressure reducing and steam converting control valves designed for precise control of steam flow in industrial processes.

Steam conversion for high pressure and high temperature reduction, e.g. high pressure to low pressure bypass stations and for process steam conversion.

Features:

Particularly large power range thanks to integrated motive steam cooling system for perfect cooling
For optimum handling of difficult operating conditions, high-quality temperature control and optimum protection against temperature shocks (valve and piping)
Low-noise, multi-stage design of the throttle body (perforated bushing)
Screwed cover or self-sealing design
High quality multi-level perforated bushing design for pressure control and quiet operation
Special solutions for installation in existing systems possible

catalogue

product

Specifications

Nominal diameter:

DN 25 – 1200 / NPS 1 – 48

Pressure class:

PN 40 – 640 / Class 150 – 2500

Temperature (max.):

Up to 600 °C / 1120 °F and above

Housing materials:

1.0460 / A105
1.5415
1.7335 / A182F12CI.2
1.7383 / A182F22CI.3
1.4903 / A182F91

Housing type:

Forged

Media:

Superheated steam

Flanges:

EN 1092-1, ASME B16.5, ISO 7005, JIS, JPI, welding ends on request

Designs:

Angle type, Globe type and Mini type

Number of stages (max.):

9

Number of controlled stages (max.):

4

Operating range (max.):

1:40

Other:

The DU type requires injection pressure control valve AK