Tank valves

SISTO-C tank valves enable complete draining. They are typically welded onto the tank bottom at its lowest point. SISTO offers various design options for welding the valve into the tank.

Design options for welding the valve onto the tank wall, e.g. for sampling purposes, are also available.

Product Features

  • Unique chambered sealing system
  • Operating pressure up to 20 bar
  • Optimised design for CIP/SIP routines
  • Without deadleg
  • Allows complete draining
  • DN6 to DN150
  • Customised valve manufacturing


  • With Y-shaped body design
  • With flush connection
  • For welding onto tank wall
  • As multiport valve


CBAV-F-AS with pneumatic actuators

Project Support

Our tank valves, just like our multi-port valves, are manufactured according to customer specifications. We accompany our customers all the way from the initial enquiry to the implementation of their projects.

We provide support as early as the planning stage with ideas and initial design drafts. We then create 3D models in close consultation with our customers. The final design is manufactured in our own production facilities using state-of-the-art technology and in accordance with the high requirements of our customers.

Design Overview

Please find here a small selection from the broad variety of tank valves already created by us. Further designs are of course possible!

Number of diaphragm seats

  • 1
  • 2
  • 3
  • 4

3D data

Find here a selection of 3D models.
view here

We will be happy to provide you with further data on request


All documents downloadable and catalogue available as flipbook (button on the right)

Approvals & Certificates

  • Declaration of conformity DGRL 2014/68/EU

    PED 2014/68/EU

  • Certification

    CE certificate (2014/68/EU)

  • Certification

    ISO 9001

  • Certification

    ISO 14001

  • Certification

    ISO 45001