Diaphragm seal, screwed gland with inside diaphragm

Process connection

Nominal pressure

• Male thread G½B to EN 837-1

PN 100, PN 250

• External thread ½-14" NPT-M

PN 100, PN 250

• open measurement flange

• DN 25

PN 10 ... PN 40

• 1 inch

Class 150, class 300

Sealing face for open measurement flange

• For stainless steel, mat. no. 1.4404/316L

To EN 1092-1, form B1 or ASME B16.5 RF 125 ... 250 AA

Materials

• Lower section (in the case of process connection thread)

Stainless steel, Mat. No. 1.4404/316L

• Diaphragm

Stainless steel, Mat. No. 1.4404/316L

• No coating

• With PTFE coating

Monel 400, mat. no. 2.4360

Hastelloy C276, mat. no. 2.4819

Hastelloy C4, mat. no. 2.4610

Tantalum

• Top section (process connection in the case of an open measurement flange)

Stainless steel, Mat. no. 1.4404/316L

• Capillary

Stainless steel 1.4571/316Ti

• Sealing material on the process connection

Viton or copper (in the case of vacuum-free version)

• Sealing material between top and bottom section

Viton (FKM) (standard)
Teflon (PTFE)
metal spring ring (silver-coated)

Capillary

• Length

Max. 10 m (32.8 ft)

• Internal diameter

2 mm (0.079 inch)

• Minimum bending radius

150 mm (5.9 inch)

Filling liquid

(for remote seals of sandwich and flange design)

• Silicone oil M5

• Silicone oil M50

• High-temperature oil

• Halocarbon oil (for measuring O₂)

• Food oil (FDA-listed)

Max. recommended process temperature

170 °C (338 °F)

Permissible ambient temperature

Dependent on the pressure transmitter and the filling liquid of the remote seal

More information can be found in the technical specifications of the pressure transmitters and in the section "Technical data of filling liquid" in the introduction to the remote seals

Weight

Approx. 1,5 kg (3.3 lb)

Certificates and approvals

Classification according to pressure equipment directive (PED 97/23/EC)

For gases of fluid group 1 and liquids of fluid group 1; complies with requirements of article 3, paragraph 3 (sound engineering practice)