Serie DD - Clean-Break Kupplung Hochtemperatur und Hochdruck
Serie DD - Clean-Break Kupplung Hochtemperatur und Hochdruck

series DD

Clean break coupling for high pressure and high temperature up to 350 bar and 250 °C – (NW 6, 9, 12, 16)

The DD series clean break couplings (dry couplings) are designed for demanding high-pressure and high-temperature applications and are used in particular in the chemical industry and in plant engineering for the safe handling of corrosive liquids and gases.

Continue reading Series DD
Series:DD
Coupling Category:Clean-break coupling (drybreak coupling)
Valve Technology:Non-drip clean break valves – no fluid leakage when disconnection and no ingress of ambient air when coupling
Types:The available types are DD-006, DD-009, DD-012 and DD-016
Nominal Sizes:Available in nominal diameters of 6 mm, 9 mm, 12 mm and 16 mm
Pressure Range:Permissible operating pressures up to 350 bar
Temperature Range:Permissible media temperatures up to 250 °C
Media:

Suitable for

  • corrosive liquids and gases.
  • media in Media Group I in accordance with the Pressure Equipment Directive 2024/68/EU (PED), available on request.
Materials:
  • Pressure-bearing parts made of stainless steel 1.4404, 1.4462, 1.4529 or equivalent
  • Seals made of FFKM
  • Springs made of Hastelloy
Design Variants:

A wide range of connections available

Optional on request

  • safety locking device
  • Ring handles (recommended for NB 16)
  • Silicone-free / free from enamel flow disturbing substances

and many other additional features

Compliance with standards / Certificates / Attestations:

Designed in accordance with the Pressure Equipment Directive 2024/68/EU (PED)

Available on request:

  • Confirmation of ATEX compliance in accordance with Directive 2014/34/EU – CAT 2G/2D
  • Type test certificate 3.1 in accordance with DIN EN 10204
Examples of sectors and applications:

Main applications in the field of high-pressure and high-temperature chemistry (over 200 bar in combination with temperatures up to 250 °C)

Send request

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Series DD
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Range of Products

notice

Please urgently seek for advice in the following cases:

  • Coupling/uncoupling under residual pressure
  • Pulsating pressures
  • Use of non-lubricating media
  • Temperature-sensitive processes
  • Interface reduction
  • Special requirements for cleanliness
  • Specific certifications
  • Non-movable head of liquid
  • Highly viscous media
  • Optimization of flow rate

Do you have any questions?
We are happy to help.

Our trained staff will provide you with the best advice. Call us or use our contact form.

+49 (0) 2129 / 567-0
info(@)walther-praezision(dot)de
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