990.28

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WIKA · Pressure measurement · Family 990

Flanged Process Connection, Diaphragm Seals

Name: Flanged Process Connection, Diaphragm Seals
Brand: WIKA

Diaphragm seal for flange connection with flush diaphragm, cell-type, for aggressive, viscous, crystallising or hot media in process industry and high-pressure applications.

NACE MR0175 / ISO 15156NACE MR0103 / ISO 17945NACE MR0175/ISO 15156NACE MR0103/ISO 17945EN 10204 2.2EN 10204 3.1

Price

On request

Depends on configuration

Request a quote

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Description

Diaphragm seals are used to protect pressure measuring instruments in demanding applications under difficult conditions. These diaphragm seal systems, consisting of a process transmitter, pressure sensor, pressure gauge or pressure switch with diaphragm seal, can be combined individually for each customer application. For this, a wide range of different designs, process connections, mounting types and wetted materials are available.

Diaphragm seal models with flange connections are available with flush or internal diaphragms, in tubular design or as in-line diaphragm seals.

Special features

Compact cell-type
Intermediate flange with flush diaphragm
Common standards and nominal widths available
Wide variety of different materials and material combinations
Instrument connection via radial gauge adapter

Identification

Model	990.28
Product family	990
Subcategory	Diaphragm seal with flange connection, cell-type

Accuracy

Safety integrity level (SIL)

SIL

Process conditions

Process connection	DIN EN 1092-1ASME B16.5-2017GOST 33259JIS B2220DN 40DN 50DN 80DN 100DN 1251 ½"2"3"4"5"DN 40ADN 50ADN 80ADN 100A
Process temperature	≤ +400 °C

Materials

Case material

Stainless steel 1.4404 (316L), Titanium grade 7 (3.7235)

Wetted parts material

Hastelloy C22 (2.4602), Hastelloy C276 (2.4819), Inconel 600 (2.4816), Inconel 625 (2.4856), Incoloy 825 (2.4858), Monel 400 (2.4360), Nickel 200 (2.4066), Nickel 201 (2.4068), Titanium grade 2 (3.7035), Titanium grade 11 (3.7225), Tantalum, ECTFE, Gold, Stainless steel 1.4404 / 1.4435 (316L), Stainless steel 1.4539 (904L), Stainless steel 1.4541 (321), Stainless steel 1.4571 (316Ti), Duplex 2205 (1.4462), Superduplex 2507 (1.4410), PFA (perfluoroalkoxy), Wikaramic®, PFA (perfluoroalkoxy), FDA, PFA (perfluoroalkoxy), anti-static, Wikaramic, Stainless steel 1.4404 (316L), Titanium grade 7 (3.7235)

Certifications and approvals

Certifications	NACE MR0175 / ISO 15156NACE MR0103 / ISO 17945EN 10204 2.2EN 10204 3.1
Explosion protection	Model 910.21 with pre-volume deflagration flame arrester for zone 0 (EPL Ga)

Additional details

Datasheet languages

Tables from datasheet

Data sheet number	Title
IN 00.06	Diaphragm seals and diaphragm seal systems, application - functionality - design
IN 00.25	Diaphragm seal systems for vacuum processes
IN 00.21	General information about NACE standards for sour gas applications
IN 00.41	Specifications of oil- and grease-free instruments

Basic information for diaphragm seal systems

Version	Diaphragm seal with flange connection, cell-type
Other versions	■ Per NACE 1) MR0175 / ISO 15156, use in H ₂ S-containing environments in oil and gas production ■ Per NACE 1) MR0103 / ISO 17945, metals resistant to hydrogen sulphide stress crack - ing ■ With pre-volume deflagration flame arrester 2) for mounting to zone 0 (EPL Ga); model 910.21; see data sheet AC 91.02
Pressure range	The maximum permissible operating pressure must be determined individually for each diaphragm seal system. It is dependent on the operating temperature, the process connec- tion, the joining method, the system fill fluid and the mounted measuring instrument.
Connection to the instrument	Suitable connection adapter to the instrument (e.g.G½, G¼, ½NPTor ¼NPT)
Mounting type	Capillary with handling tube
Vacuum service 3)	■ Basic service ■ Advanced service ■ Premium service

Process connection
Standard 1)	■ DIN EN 1092-1 ■ ASME B16.5-2017 ■ GOST 33259 ■ JIS B2220
Size
DIN EN 1092-1	■ DN 40 ■ DN 100	■ DN 50 ■ DN 125	■ DN 80
ASME B16.5-2017	■ 1 ½" ■ 4"	■ 2" ■ 5"	■ 3"
GOST 33259	■ DN 40 ■ DN 100	■ DN 50 ■ DN 125	■ DN 80
JIS B2220	■ DN 40A ■ DN 100A	■ DN 50A	■ DN 80A

Process connection

Sealing geometry
DIN EN 1092-1	■ Form B1 ■ Form A ■ Form B2 ■ Form C (tongue)	■ Form D (groove) ■ Form E (spigot) ■ Form F (recess)
ASME B16.5-2017	■ RF 125 ... 250 AA ■ RFSF ■ Flat face ■ Small tongue ■ Small male face ■ Small groove	■ Small female face ■ Large tongue ■ Large male face ■ Large groove ■ Large female face ■ RJF groove
GOST 33259	■ Type B ■ Type A (flat face) ■ Type C (tongue)	■ Type D (groove) ■ Type E (spigot, male face) ■ Type F (recess, female face)
JIS B2220	RF
Wetted parts	Diaphragm and raised face →See tables below for material selection
Origin of wetted parts	■ International ■ Exclusively from EU, CH, GB, US, CA
Level of cleanliness of wetted parts 2)	■ Oil- and grease-free perWIKA specification (< 1,000 mg/m 2 ) ■ Oil- and grease-free per ASTM G93-03 level D (< 220 mg/m 2 )

View all (17)

Material combination	Maximum permissible temperature 1) in °C [°F]
	Wetted parts
Diaphragm seal Stainless steel 1.4404 (316L)	Stainless steel 1.4404 / 1.4435 (316L)	400 [752]
Hastelloy C22 (2.4602) 2)	260 [500]
Hastelloy C276 (2.4819) 2) 3)	400 [752]
Inconel 600 (2.4816) 2)	400 [752]
Inconel 625 (2.4856) 2)	400 [752]
Incoloy 825 (2.4858) 2)	400 [752]
Monel 400 (2.4360) 2)	400 [752]
Nickel 200 (2.4066) 2)	260 [500]
Nickel 201 (2.4068) 2)	260 [500]
Titanium grade 2 (3.7035) 2)	150 [302]
Titanium grade 11 (3.7225) 2)	150 [302]
Tantalum 2) 3)	300 [572]
Titanium grade 7 (3.7235)	Titanium grade 7 (3.7235) / Titanium grade 11 (3.7225)	250 [482]

Material	Maximum permissible
Diaphragm seal and wetted parts	temperature 1) in °C [°F]
Stainless steel 1.4435 (316L)	400 [752]
Stainless steel 1.4539 (904L)	400 [752]
Stainless steel 1.4541 (321)	400 [752]
Stainless steel 1.4571 (316Ti)	400 [752]
Duplex 2205 (1.4462)	250 [482]
Superduplex 2507 (1.4410)	250 [482]
Hastelloy C22 (2.4602)	400 [752]
Hastelloy C276 (2.4819)	400 [752]
Inconel 600 (2.4816)	400 [752]
Inconel 625 (2.4856)	400 [752]
Incoloy 825 (2.4858)	400 [752]
Monel 400 (2.4360)	400 [752]
Nickel 200 (2.4066)	300 [572]
Nickel 201 (2.4068)	400 [752]
Titanium grade 2 (3.7035)	300 [572]

Material of coating 1)	Maximum permissible temperature 2) in °C [°F]
Wetted parts
ECTFE	150 [302]
PFA (perfluoroalkoxy), FDA	260 [500]
PFA (perfluoroalkoxy), anti-static	260 [500]
Gold	400 [752]
Wikaramic ®	400 [752]

Logo	Description	Country
-	MChS Permission for commissioning	Kazakhstan
-	CRN Safety (e.g. electr. safety, overpressure, ...)	Canada

Certificates

Certificates	■ 2.2 test report per EN 10204 (e.g. state-of-the-art manufacturing, material proof, indication accuracy for diaphragm seal systems) ■ 3.1 inspection certificate per EN 10204 (e.g. material proof for wetted metal parts, indication accuracy for diaphragm seal systems)

DN	PN in bar	Dimensions in mm[in]	Weight in kg [lb]
Mb	d₄	b
40	10 ... 400	45 [1.772]	88 [3.465]	20 [0.787]	1.0 [2.205]
50	10 ... 400	60 [2.362]	102 [4.016]	20 [0.787]	1.3 [2.866]
80	10 ... 400	90 [3.543]	138 [5.433]	20 [0.787]	2.3 [5.071]
100	10 ... 16	90 [3.543]	158 [6.220]	20 [0.787]	3.1 [6.834]
100	25 ... 400	90 [3.543]	162 [6.378]	20 [0.787]	3.2 [7.055]
125	10 ... 400	124 [1.772]	188 [7.402]	22 [0.866]	4.8 [10.582]

Flange material	DN	PN	Maximum allowable pressure in bar [psi] at ambient temperature 21 °C [60.8 °F]
Nickel 200 (2.4066)	25, 40, 50, 80, 100, 125	10	7.4 [107]
16	11.9 [172]
25	18.6 [269]
40	29.7 [430]
63	46.8 [678]
100	74.4 [1,078]
160	119 [1,725]
250	186 [2,697]
Nickel 201 (2.4068)	25, 40, 50, 80, 100, 125	10	6.2 [89]
16	10 [145]
25	15.6 [226]
40	25 [362]
63	39.3 [569]
100	62.5 [906]
160	100 [1,450]
250	156.2 [2,264]

DN	Class	Dimensions in mm[in]	Weight in kg [lb]
		Mb	d₄	b
1 ½"	150 ... 2500	45 [1.772]	73 [2.874]	20 [0.787]	0.7 [1.543]
2"	150 ... 2500	60 [2.362]	92.1 [3.626]	20 [0.787]	1.0 [2.205]
3"	150 ... 2500	90 [3.543]	127 [5.0]	20 [0.787]	2.0 [4.409]
4"	150 ... 2500	90 [3.543]	157.2 [6.189]	20 [0.787]	3.0 [6.614]
5"	150 ... 2500	124 [1.772]	185.7 [7.311]	22 [0.866]	4.7 [10.362]

DN	PN in bar	Dimensions in mm[in]	Weight in kg [lb]
		Mb	d₄	b
40	16 ... 200	45 [1.772]	88 [3.465]	20 [0.787]	1.0 [2.205]
50	16 ... 200	60 [2.362]	102 [4.016]	20 [0.787]	1.3 [2.866]
80	16 ... 200	90 [3.543]	133 [5.236]	20 [0.787]	2.3 [5.071]
100	16 ... 200	90 [3.543]	158 [7.244]	20 [0.787]	3.1 [6.834]
125	16 ... 200	90 [3.543]	184 [7.402]	22 [0.866]	4.8 [10.582]

DN	PN	Dimensions in mm[in]	Weight in kg [lb]
Mb	d₄	b
40A	10K ...20K	45 [1.772]	81 [3.189]	20 [0.787]	0.8 [1.764]
30K ...63K	45 [1.772]	90 [4.016]	20 [0.787]	1.0 [2.205]
50A	10K ...20K	60 [2.362]	96 [3.78]	20 [0.787]	1.1 [2.425]
30K ...63K	60 [2.362]	105 [4.134]	20 [0.787]	1.4 [3.086]
80A	10K	90 [3.543]	126 [4.961]	20 [0.787]	2.0 [4.409]
16K ...20K	90 [3.543]	132 [5.197]	22 [0.866]	2.4 [5.291]
30K ...63K	90 [3.543]	140 [5.512]	22 [0.866]	2.7 [5.952]
100A	10K	90 [3.543]	151 [5.945]	22 [0.866]	3.1 [6.834]
16K ...30K	90 [3.543]	160 [6.299]	22 [0.866]	3.5 [7.716]
40K ...63K	90 [3.543]	162 [6.378]	22 [0.866]	3.7 [8.157]

Flange material	DN	PN	Maximum allowable pressure in MPa [psi] at ambient temperature 21 °C [60.8 °F]
Nickel 200 (2.4066)	25A, 50A, 80A, 100A	5K	0.4 [63]
10K	0.8 [126]
16K	1.6 [244]
20K	2.1 [308]
30K	3.1 [462]
40K	4.2 [616]
63K	6.6 [969]
Nickel 201 (2.4068)	25A, 50A, 80A, 100A	5K	0.3 [53]
10K	0.7 [106]
16K	1.4 [205]
20K	1.7 [258]
30K	2.6 [388]
40K	3.5 [517]
63K	5.6 [814]

Flange material	DN	PN	Maximum allowable pressure in MPa [psi] at ambient temperature 21 °C [60.8 °F]
Monel 400 (2.4360)	25A, 50A, 80A, 100A	5K	0.4 [69]
10K	0.9 [138]
16K	1.8 [266]
20K	2.3 [335]
30K	3.4 [502]
40K	4.6 [670]
63K	7.2 [1,055]
Inconel 600 (2.4816)	25A, 50A, 80A, 100A	5K	0.5 [73]
	10K	1 [146]
	16K	1.9 [281]
	20K	2.4 [355]
	30K	3.6 [532]
	40K	4.8 [710]
	63K	7.7 [1,117]
Incoloy 825 (2.4858)	25A, 50A, 80A, 100A	5K	0.6 [89]
10K	1.2 [178]
16K	2.3 [344]
20K	2.9 [433]
30K	4.4 [650]
40K	5.9 [867]
63K	9.4 [1,365]
Titanium grade 2 (3.7035)	25A, 50A, 80A, 100A	5K	0.6 [87]
	10K	1.2 [175]
	16K	2.3 [337]
	20K	2.9 [425]
	30K	4.3 [637]
	40K	5.8 [850]
	63K	9.2 [1,338]
Titanium grade 7 (3.7235)	25A, 50A, 80A, 100A	5K	0.6 [87]
10K	1.2 [175]
16K	2.3 [337]
20K	2.9 [425]
30K	4.3 [637]
40K	5.8 [850]
63K	9.2 [1,338]

	Description Order	number
910.27	Flushing ring for flange-connection diaphragm seals →See data sheet AC 09.05	On request
IBF2, IBF3	Monoblock with flange connection →See data sheet AC 09.25	On request
910.16	Form H instrument mounting bracket per DIN 16281, 100 mm, aluminium, black	9091858
	Form H instrument mounting bracket per DIN 16281, 100 mm, stainless steel	9091882
	→See data sheet AC 09.05	On request