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You will find a summary of all data sheets from the product area here.

Butterfly valves

Herberholz shut-off valves are used to shut off or to control the flow of a wide variety of process media in pipelines.
The sealing inserts are usually replaceable, and the valves themselves can be fitted with any type of actuator system that you want.
All the nominal sizes are standard. Other sizes are available on request.
Technical data and dimension sheets are available for all the series listed here. They can be read or downloaded as PDF files.

Wafer type

Type: AK/SSK
Series: 054
Nominal diameter 500 - 1200

Data sheet.pdf (1 MB)*
Operating instructions.pdf
(2960 KB)*


For all gaseous media acc. to DVGW-Arbeitsblatt G260.

Can be used as safety shut-off valve for pipes to burner or multiple burners.

Type: AK/DVGW+AK/DVGW-SSK
Series: 049
Nominal Diameter 50 - DN 400
DIN EN 593

Data sheet.pdf (688 KB)*
Operating instructions.pdf (924 KB)*

Fitting instructions. pdf
(168 KB)*

For all gaseous media acc. to DVGW-Arbeitsblatt G260.

May be used as safety shut-off valve for pipes to burner or multiple burners.

Type: AK
Series: 040 + 042 + 048
Nominal Diameter 50 - DN 500
DIN EN 593

Data sheet.pdf (664 KB)*
Operating instructions.pdf (2960 KB)*
Fitting instructions.pdf (168 KB)*

For liquid, gaseous, dusty and aggressive media.

Foodstuff industry.

Wafer and lug type

Type: AK/D
Series: 072+073
Nominal Diameter 25 - 700

Data sheet.pdf (660 KB)*
Operating instructions.pdf
(924 KB)*


For liquid and gaseous media.

max. Difference pressure
16 bar (DN25-200)
10 bar (DN250-700)

Temperature range         
-10 °C to +150 °C

Series 072 = between-flange valve
Series 073 = on-flange valve

Ring shut-off valves for technical applications

Type: RAKC
Series: 037
Nominal diameter 50 - 300 
ANSI Class 125/150

Data sheet.pdf (1 MB)*
Operating instructions.pdf
(2960 KB)*
Fitting specifications.pdf
(277 KB)*

For liquid and gaseous media, corrosive applications, areas subject to explosion hazard, abrasive media, clean air (TA-Luft) applications

Available in between-flange and on-flange versions

This files require Adobe Reader