DRV Steam pressure reduction valve

SCHROEDAHL steam pressure reduction control valves are high-quality products that are fully function-optimized through continuous further development.
It was possible to minimize the actuator forces even during high pressure applications, which in-turn leads to the use of smaller and cost saving actuators.
The internal construction is designed for low noise operation, which guarantees environmentally- friendly handling.
Forged housings combined with a consistent, well thought-out engineering ensures a strong, durable and resistant quality.

Brand:
Schroedahl
Type:
Pressure reducing > Globe
Category
Valves > Control Valve
Markets
Industrial > Pulp & Paper
Paints & Colors
Industrial > Mining
Industrial > Chemical
Industrial > Food & Beverages
Industrial > Nuclear
Industrial > Petrochemical
Textile
Industrial > Heating and Cooling
Industrial > Industrial Boilers
Application
Motorized control valves for continuous blow down
of steam boilers.
Product Design
Globe
Benefits

Product features
- Customised, high-quality steam pressure valve with cage-guided perforated bushing in a single-stage or multi-stage design
- For the best handling of difficult operating conditions with high grade pressure control
- Low-noise, multi-stage design of the throttle body (perforated bushing)
- Screwed cover or self-sealing design

Features and advantages
Pressure reduction via multi-stage controlled, sub- critical expansion is particularly low-noise.
- The valve seat and perforated basket can be replaced
- Large control ratio for control in the start-up range with high differential pressure
- Low-maintenance, adjustable stuffing box (packing pure graphite)

Options:
- Balanced plug
- Armoured sealing surfaces
- Heating and drainage nozzles

Designs according to customer requirements are also available.
All common drive types can be used.

Performance data

Technical data
Nominal diameter: DN 25 – 1200 / NPS 2 – 48
Pressure class: PN 16 – 640 / Class 150 – 2500
Temperature (max.): 580 °C / 1076 °F
Housing material: 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
Actuators: Pneumatic, electric, hydraulic
Number of stages (max.): 9
Number of controlled stages (max.): 4
Operating range (max.) : 1:50

Design Standard

Design standard ANSI:
Yes
Design standard DIN:
Yes

Unit

Unit Metric:
Yes
Unit Imperial:
Yes

Temp

Max C°:
580.00
Max F°:
1076.00

Pressure Rating

Pressure rating PN:
PN 320,
PN 40,
PN 400,
PN 63,
PN 10,
PN 100,
PN 16,
PN 160,
PN 25,
PN 250
Pressure rating class:
150,
1500,
2500,
300,
600,
900

Nominal size

Nominal Size [mm] (DN):
100,
1000,
1150,
1200,
125,
1300,
1400,
1500,
150,
1600,
200,
25,
250,
1050,
1100,
300,
32,
700,
450,
50,
500,
550,
600,
350,
650,
65,
750,
80,
800,
850,
900,
40,
400,
950
Nominal Size [Inch] NPS:
46,
36,
38,
4,
40,
42,
44,
48,
32,
5,
52,
56,
6,
60,
64,
34,
30,
18,
1,
1.5,
10,
12,
14,
16,
2,
3,
2.5,
20,
22,
24,
26,
28,
8

Housing

Housing Material:
1.0460 / A105,
1.5415,
1.7335 / A182F12CI.2,
1.7383 / A182F22CI.3,
1.4903 / A182F91
Housing Type:
Forged

Stages

Number of stages:
9
Number of controlled stages:
4

Other data

Fluids:
Steam,
Gas
Auxiliary Energy (Actuation):
All
Actuator:
Electric,
Pneumatic,
hydraulic
Stem packing:
Anti-Extrusion Ring,
Live Loaded,
Bellow
Fail-Safe Function:
On
Flanges:
EN 1092-1,
ASME B16.5,
ISO 7005,
JIS,
JPI,
welding ends on request
Operating range:
01:50
Contact

Schroedahl Customer Care

SCHROEDAHL GmbH

- A subsidiary of Circor International -

Alte Schönenbacher Str. 4
51580 Reichshof-Mittelagger
Germany

Phone +49 2265 9927-0
Fax +49 2265 9927-947
schroedahl@circor.com