This slimline monoflange is designed to replace the primary and secondary process valve assembly and a dP manifold with any DIN19213 / IEC61518 differential pressure transmitter which is needed for dP flow measurement. It is a combination of the primary process isolation valve (O.S.&Y), and a 5-valve level manifold, all integrated in one forged body.

The main advantages are less leaking points, weight saving and up to 35% reduction in installation and maintenance time and costs.

Maximum working pressure is 420 Bar
Maximum temperature is 200°C


Vent and/or testports will always be 1/4″ threadsize, independent of process connection sizes.

For ordering information please consult the Model Code Wizard for port connection types available.

Pressure vs. Temperature diagram


Design features

  • Self aligning metal seats
  • Compact Design
  • Non-rotating spindle tip
  • Metal seal between body and bonnet
  • Bonnet Locking pins
  • Firesafe OS&Y Valve
  • Safetyback seating T-Bar and Anti-Tamper operated valves
  • Full traceability of all materials
  • 100% pressure tested


  • Flanges in DIN and ANSI 1/2″ up to 3″
  • Flange ratings 150# up to 2500#
  • Available in Monel, Hastelloy, Duplex or NACE compliant materials.
  • Body Enclosure available
  • EEx manifold heater available
  • High temperature up to 450°C
  • High pressure up to 680 Bar

Valve diagram

MD59 monoflange diagram


Measuring range
see data sheet
Measuring principal
OFCEAS laser
ambient temperature
10°C ... +40°C
Possible interfaces
Ethernet, ModBus (TCP/IP, RS), analog, USB
Power Supply
110–230V AC / 50–60 Hz
Analog outputs
4 ... 20mA; max. load 500Ω
Detection limit
see parameter
Respons time
< 10 sec
Dimensions (H x W x D)
Rack 19inch, 4U or cabinet
20 kg (analyzer)

MD59 Monoflange for creating a dP/flow/level close coupled hook up.
DBB or SBB monoflange configuration combined with Double Equalize / Vent manifold valve configuration.
To be combined with the MP00 model on the low pressure side.