Product
Direct Mounting DM 1
All three valves on top with screwed process connections, for direct mounting where a straight valve would foul the instrument.
Manifolds
Direct Mounting DM 1
Designed for direct mounting onto standard differential pressure transmitters. The block carries three valves — two main process isolation valves and one equalising valve — with all three taken off the top, which is the arrangement to use where a straight valve would foul the instrument and where the handles need to be easy to reach.
Dimensions are for the standard 54 mm (2 1/8 in) instrument connection centre distance, which is what most instruments use. The manifold is also made for other centre distances — 55 mm, 56 mm and 57 mm — with dimensions to suit; ask for those.
The process connection is 1/2" NPT (F), the instrument connection is flanged and the drain / vent is 1/4" NPT (F). A drain port on the instrument side with a drain plug is available as an option, which takes the 64 mm dimension to 82 mm, as is a test port on the process side with a plug. Four mounting bolts to IS 1364-1960 and two PTFE or Viton interface seals are supplied.
- Max working pressure
- up to 620 kg/cm² body / 413 kg/cm² seat (hydrostatic test)
- Body materials
- A 105, A 182 / A 479 Gr F 304SS, A 182 / A 479 Gr F 316SS, Monel, Hastelloy
- Thread systems
- NPT, Flanged
Features
- All three valves on top, screwed process connections
- Two process isolation valves and one equalising valve
- Clears the instrument where a straight valve would foul
- Process 1/2" NPT (F), instrument flanged, drain / vent 1/4" NPT (F)
- Accessory: mounting bolts 4 nos, PTFE / Viton interface seals 2 nos
Applications
- Direct-mounted differential pressure transmitters
- DP flow and level measurement
- Instrument hook-ups with no impulse pipework
- Max working pressure
- up to 620 kg/cm² body / 413 kg/cm² seat (hydrostatic test)
- Thread systems
- NPT, Flanged
- Body materials
- A 105, A 182 / A 479 Gr F 304SS, A 182 / A 479 Gr F 316SS, Monel, Hastelloy
- Temperature
- PTFE gland packing as standard; Graphoil above 180 °C
- Testing
- Hydrostatic body 620 kg/cm², seat 413 kg/cm²; pneumatic seat 40 kg/cm², at 25 °C
| Specification | Details |
|---|---|
| Connections | Process: 1/2” NPT (F) Instrument: Flanged Drain / Vent: 1/4” NPT (F) |
| Test Pressure | @ 25°C Room Temperature Hydrostatic: Body – 620 Kg/cm²; Seat – 413 Kg/cm² Pneumatic: Seat – 40 Kg/cm² |
| Gland packing | PTFE: Standard GRAPHOIL: Temperatures above 180°C |
| Material | A 105, A 182 / A 479 Gr F 304SS, A 182 / A 479 Gr F316SS, Monel, Hastelloy |
| Finish | CS: Zinc Plated and Dichromated; SS: Natural |
| Option | Test Port on process side with plug. |
| Accessory | Mounting Bolts - IS: 1364 - 1960 - 4 Nos Interface seal - PTFE / VITO 'N' - 2 Nos |
A 105
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
A 182 / A 479 Gr F 304SS
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
A 182 / A 479 Gr F 316SS
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
Monel
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
Hastelloy
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
Certification pack available on request for this range.
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