All welded flanged diaphragm seal with internal diaphragm model DFE EN

FEATURES

■All-welded compact design for small flanges and low pressure ranges

■Variety of wetted parts materials, spe- cial materials cover the sealing sur- face too

■Filling port in the instrument connec- tion

■Suitable for pressure gauges, switch- es and transmitters

■Continuous duty design

■Minimized fill volume

APPLICATIONS

■Corrosive processes

■Controlling fugitive emissions

■Elevated process temperatures

■Suspended solids in the process

■Limited space

CONSTRUCTION

The DFE Type allows a semi flush in - stallation on pipe, tank or vessel applica-tions. All of the combinations afford in- strument protection from corrosives, heat and clogging issues associated with viscous media or solids.

SPECIFICATIONS

Maximum Pressure Rating

PN10, PN16, PN25, PN40

Flange Material

Stainless Steel 1.4404 (316L)

Diaphragm Materials

Stainless Steel 1.4435 (316L), Hastelloy C-276, Tantalum, Monel 400, others on request

Instrument Connection Material

Stainless Steel 1.4404 (316L)

Instrument Connection Sizes

G ¼, G ½ female,

¼ NPT, ½ NPT female,

Port for direct welded instruments or capillary line

Process Connections

DN25, DN40 according to EN 1092-1 Form B1, others on request

Accuracy (typical)

Seal will add 0,5 % to the stated full scale accuracy of the instrument attached.

Standard Fill Medias

Silicone Halocarbon Syltherm

FDA approved white oil, silicone free

*Others available upon request

ATEX

Conformity according to RL 94/9/EC appendix X for mechanical equipment in potential hazardous areas: Optional, marking

 0044  II 2 GD c II TX

File no. 35101282 at notified body 0044, TÜV NORD CERT

The temperature class will be determined by the used measuring device.

OPTIONS

DU - Welded instrument connection MQ - PMI-test

6B - Cleaned for Oxygen service

C3 - Material certificate EN 10204 3.1 CD5 - NACE certificate

ACCESSORIES

Flushing ring, capillary line, cooling tower

 General dimensions [mm]