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Hygienic double seal valves DD

RIEGER Double Seal Valves DD are used for the mix-proof barrier of product and cleaning medium in pipe sections. The leakage chamber is placed between the separating seals. The leakage is discharged via the leakage valves to the outside.
The design of the one-piece, solid and cavity-free valve housing provides optimal CIP/SIP cleaning options. The valves are used in systems of the brewery and beverage industry, in dairies and in the food industry and pharmaceutical industry.

Material in contact with product
optional
not in contact with product
1.4404/AISI316L
1.4435/AISI316L
1.4301/AISI304
Gaskets

O-rings/gaskets EPDM
(others on request)
Temperatures
maximum EPDM
continuous operation

steam sterilization

130 °C*

150 °C*

Pressures

closing pressure

air pressure

max. 6 bar

min 6 bar –
max. 10 bar

Surfaces

in contact with product
optional

not in contact with product

Ra ≤ 0,8 µm
e-polished,
other surfaces
on request
Ra ≤ 1,6 µm
Connections
Standard-
pipe classes
DIN 11850-R2 (DIN 11866 A)
O.D.-Tube (DIN 11866 C)
                                                                                 *dependent upon operating conditions

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