Diaphragm seals of flange design, 161

Diaphragm seals of flange design

For gage, absolute, differential pressure and flow with flexible capillary

Diaphragm seals of flange design

Nominal diameter	Nominal pressure
• DN 50 (recommendable only for	PN 10 ... PN 40, PN 100
pressure transmitters for pressure)
• DN 80	PN 10 ... PN 40, PN 100
• DN 100	PN 16, PN 40
• DN 125	PN 16, PN 40
• 2 inch (recommendable only for	Class 150, class 300, class 600,
pressure transmitters for pressure)	class 1500
• 3 inch	Class 150, class 300, class 600
• 4 inch	Class 150, class 300, class 400
• 5 inch	Class 150, class 300, class 400

Sealing material in the process flanges

•For pressure transmitters, absolute pressure transmitters and low- pressure applications

•For other applications

Maximum pressure

Tube length

Capillary

• Length

Copper

Viton

See above and the technical data of the pressure transmitter

Without tube as standard (tube available on request)

Max. 10 m (32.8 ft), longer lengths on request

Sealing face
• For stainless steel, mat.	To EN 1092-1, form B1 or
No. 1.4404/316L	ASMR B16.5 RF 125 ... 250 AA
	ASMR B16.5 RF 125 ... 250 AA
• For the other materials	To EN 1092-1, form B2 or
	ASME B16.5 RFSF

Materials
• Main body	Stainless steel 316L
• Wetted parts	Stainless steel 316L
	• Without foil
	• PTFE (for vacuum on request)
	• ECTFE (for vacuum on request)
	• PFA (for vacuum on request)
	Monel 400, mat. No. 2.4360
	Hastelloy C276, mat. No. 2.4819
	Hastelloy C4, mat. No. 2.4610
	Tantalum
• Capillary	Stainless steel, mat.
	No. 1.4571/316Ti
• Sheath	Spiral hose made of stainless
	steel, mat. No. 1.4404/316L

• Internal diameter	2 mm (0.079 inch)
• Minimum bending radius	150 mm (5.9 inch)

Filling liquid
(for remote seals of sandwich and	Silicone oil M5
flange design)
	Silicone oil M50
	High-temperature oil
	Halocarbon oil (for measuring O2)
	Food oil (FDA listed)
	Glycerine/water (not for use in
	low-pressure range)

Permissible ambient temperature	Dependent on the pressure trans-
	mitter and the filling liquid of the
	remote seal
	More information can be found in
	the technical data of the pressure
	transmitters and in the section
	"Technical data of filling liquid" in
	the Technical description to the
	remote seals

Weight	Approx. 4 kg (8.82 lb)

Certificate and approvals
Classification according to pressure	For gases of fluid group 1 and liq-
equipment directive	uids of fluid group 1; complies
(DRGL 97/23/EC)	with requirements of article 3,
	paragraph 3 (sound engineering
	practice)

Siemens FI 01 · 2009