MP01 – Double flange

This Double flanged monoflange is designed to replace the primary and secondary process valve assemblies and functions as process valve.

It is a combination of the primary process isolation valve (OS&Y), an optional bleed and optional secondary valve integrated in a one piece body design.

The main advantages are minimum leaking points, weight saving and reduction in installation and maintenance time and costs.

This monoflange is standard produced in AISI316/L NACE material, but e.g. Monel, Hastelloy, Duplex, Super Duplex or Alloy 825/625, 6Mo/254SMO or Titanium compliant materials are also available.

  • Pressure rating from: 150# up to 2500# and optional API5000 – API10.000
  • Maximum working temperature: 200°C / 392°F (PTFE packing)
  • High temperature up to: 450°C / 842°F (Graphite packing)


As default: Vent and/or Test ports will have ¼″ thread size.

For ordering information please consult the Model Code Wizard of MP01 Double Flange leaflet.

Pressure vs. Temperature diagram


Design features

  • Self aligning metal seats
  • Non-rotating spindle tip
  • Metal seal between body and bonnet
  • Bonnet Locking pins
  • Fire safe OS&Y piping valve
  • Safety back seating T-Bar and Anti-Tamper operated valves
  • Full traceability of all materials (unique serial number)
  • 100% pressure tested (1,5 x MWP)


  • Flanges according: ANSI, EN1092-1 or JIS
  • Flange sizes from: 1/2”(DN15) up to 3”(DN80)
  • Available in e.g.: Monel, Hastelloy, Duplex, Super Duplex, Alloy 825/625, 6Mo/254SMO or Titanium compliant materials
  • High temperature up to 450°C / 842°F (Graphite packing)
  • High pressure up to 10.000 psi
  • Fugitive Emission design (class AH)
  • Valve head(s) with Anti-Tamper facility, with a removable T-bar key to prevent unauthorized operation of the valve

Valve diagram

  • mp01 double flange 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)

MP01 Double flanged monoflange for mounting of flanged Diaphragm Seals or flanged pressure instruments. A one piece integration of process valve and drip/flush ring. Can also be used as reducer for e.g. 2” process and 3” remote seal connection.