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TYPE 73.7 ROTARY PLUG VALVE

SHORT DESIGN · HIGH PRESSURE

SMART IN FLOW CONTROL

For process engineering in high pressure applications

Wide range of applications

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Technical Data

Version

Face-to-face dimensions
Size
Pressure rating
Type of end connection · Flange
Seat/plug seal
Seat factors
Flow direction
Characteristic
Rangeability
Temperature range
(different designs)
Leakage rate
 
 
 
 
 
Compliance
DIN EN 558 Table 2 R 2, 15, 39, 54
DN 25 to 500
PN 63, 100, 160
DIN EN 1092-1
 
Metal seal · Soft seal
F1 (100 %) · F0,6 (60 %) · F0,4 (40 %) · F0,25 (25 %)
Flow to close (FTC) · Flow to open (FTO)
Equal percentage or linear using a positioner · inherent
Up to 200:1
–196 to +500 °C
 
Metal seal:
IV acc. to DIN EN 60534-4 and ANSI/FCI 70-2

Soft seal:
VI acc. to DIN EN 60534-4 and ANSI/FCI 70-2
DIN EN 558 Table 2 R 2, 15, 39, 54
NPS 1 to 20
CL 600, 900, 1500*
ANSI/ASME B16.5
 
Metal seal · Soft seal
F1 (100 %) · F0,6 (60 %) · F0,4 (40 %) · F0,25 (25 %)
Flow to close (FTC) · Flow to open (FTO)
Equal percentage or linear using a positioner · inherent
Up to 200:1
–321 to +932 °F
 
Metal seal:
IV acc. to DIN EN 60534-4 and ANSI/FCI 70-2

Soft seal:
VI acc. to DIN EN 60534-4 and ANSI/FCI 70-2

* Depending on valve size. Other pressure ratings on request.

Sample configurations

The rotary plug valve can be configured with pneumatic, electric or hydraulic actuators and can be equipped with various accessories.

Type 73.7-AT

With pneumatic double piston rotary actuator type AT, single or double acting

Type 73.7-R

With pneumatic rolling diaphragm actuator Type R, single acting (up to DN 350/NPS 14)

Type 73.7-MZ

With pneumatic diaphragm actuator Type MZ, single acting

Type 73.7-MD

With pneumatic diaphragm actuator Type MD, single acting

Design Versions

Standard stuffing box

Stuffing box without O-rings; adjustable

TA-Luft/DIN EN ISO 15848

Stuffing box with O-rings: two dynamic and one static; not adjustable

Shaft seal

Bearing sealing with O-ring

Trunnion bearing seal

Bearing sealing with O-ring and closed bearing bushing

Type 73.7-IT2

Insulating section IT2

Insulating section for cryogenic media at temperatures from –100 to –196 °C

Type 73.7-IT1

Insulating section IT1

High and low temperature insulating section at temperatures of –40 to –100 °C and 350 to 500 °C

Type 73-7-DSB

Double stuffing box with or without test connection

Equivalent sealing system to bellows seal. For toxic, contaminant media.

Type 73.7-Heating jacket

Heating jacket · various designs (only for DN 25/NSP 1 available)

For process media that remain liquid only above a certain temperature. A heat transfer medium guarantees the required temperature.

Type 73.7-Cleaning connections

Cleaning connections on plug, trunnion bearing, packing and/or shaft

For sticky and contaminated process media, media contain-ing solids.