2/2-way diaphragm valve with pneumatic plastic actuator (Type CLASSIC)

Type 2031 / Article No. 2420

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Actuator for diaphragm valve

Valve body and diaphragm are available in various materials and variants
Product wetted surfaces in Ra ≤ 0.38 - ≤ 1.6 µm (optionally electropolished)
Available in all common connection sizes and variants

For selecting the correct product please refer to the technical data, images and notes for proper use according to the data sheet.

Product description

The externally controlled diaphragm valve Type 2031 consists of a pneumatically operated piston actuator, a diaphragm and a 2-way valve body. The proven and robust actuator with a plastic housing ensures use in hygienic or aggressive ambient conditions. The flow-efficient valve bodies with little dead space enable high flow rates and a wide range of possible uses. The valve body and the diaphragm are available in all common materials and variants. The actuator has a compact, autoclavable design (PPS variant). The integration of the automation units 8690/8691/8697 is possible in all configuration levels (can be retrofitted). An explosion-proof ATEX / IECEx device variant is available. The add-on body is optionally available in plastic or stainless steel. The actuator is equipped with an integrated, optical position indicator as standard, optionally a min./max. stroke limiter can be installed.

Commodity Codes: 84819000
Country: DE

Technical attributes

Name	Value	Unit
Type	2031
Product sub-group	On/off valves
Main valve operating principle	Diaphragm valve
Valve piloting type	Pneumatic
Valve construction	Actuator
Actuator version	Classic
Control function	A - normally closed (NC)
Valve function number of switching positions	2
Actuator size	80	mm
Actuator material	PPS (Polyphenylene sulphide)
Control air connection material	Stainless steel
Control air connection type	Internal thread
Control air connection thread type	G
Control air connection diameter (inch)	1/4 inch
Control air connection position	90° to direction of line
Control air hole diameter	3	mm
O-ring between cover and bush	No
Position monitoring via magnetic piston	No
Valve function manual actuation	No
Additional manual actuation included	No
Body nominal size	25	mm
Body nominal size (IN)	1 inch
Diaphragm coupling	Bayonet
Fluidic port connection number	2
Manufacturer´s test certificate 3.1 included	No
Control pressure min	5,5	bar
Control pressure max	7	bar
Temperature environment min	5	°C
Temperature environment max	140	°C
CIP capable	Yes
SIP capable	Yes
Piston seal material	FKM (Fluor rubber)
Weight	1,6	kg
Approval type	ATEX, IECEx
Certification type	II 2 G Ex h IIC T4 Gb, II 2 D Ex h IIIC T135°C Db, Ex h IIIC T135°C Db, Ex h IIC T4 Gb

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Can be combined with

Type 2034

Multifunction block and weld solution

Type 3233

2/2-way diaphragm valve with manually...

Type 8690

Pneumatic control for decentralised...

Type 8697

Pneumatic control for decentralised...

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Applications & Tools

Sizing Tools

Downloads

Data Sheets

Description	Filesize	Language / Country
Type 2031 data sheet \| pneumatically operated diaphragm valve with INOX actuator	550 kB	EN / EU
Type 2031 data sheet \| pneumatically operated diaphragm valve with cast body	2 MB	EN / EU
Type 2031 data sheet \| pneumatically operated diaphragm valve with cold formed body K (VA)	2 MB	EN / EU
Type 2031 data sheet \| pneumatically operated diaphragm valve with forged body	2 MB	EN / EU
Type 2031 data sheet \| pneumatically operated diaphragm valve with tube valve body TVB(VP)	1 MB	EN / EU
Type 2031 data sheet \| pneumatically operated, compact diaphragm valve	503 kB	EN / EU
Type 2XXX data sheet \| accessory for pneumatic acutators CLASSIC and ELEMENT	791 kB	EN / EU
Tipo 2000 hoja de datos \| accesorios para válvula de asiento inclinado	1 MB	ES / ES
Tipo 2031 folha de dados \| válvula de membrana de acionamento pneumático	830 kB	PT / BR
Tipo 2031 hoja de datos \| válvula de membrana [cuerpo de laválvula forjado]	625 kB	ES / ES
Typ 2031 Datenblatt \| pneumatisch betätigtes Membranventil mit Feingussgehäuse	2 MB	DE / DE
Typ 2031 Datenblatt \| pneumatisch betätigtes Membranventil mit INOX-Antrieb	546 kB	DE / DE
Typ 2031 Datenblatt \| pneumatisch betätigtes Membranventil mit Rohrumformgehäuse TVB (VP)	2 MB	DE / DE
Typ 2031 Datenblatt \| pneumatisch betätigtes Membranventil mit Schmiedegehäuse	2 MB	DE / DE
Typ 2031 Datenblatt \| pneumatisch betätigtes Membranventil mit kaltumgef. Gehäuse K (VA)	2 MB	DE / DE
Typ 2031 Datenblatt \| pneumatisch betätigtes, kompaktes Membranventil	422 kB	DE / DE
Typ 2XXX Datenblatt \| Zubehör für pneumatische Antriebe CLASSIC und ELEMENT	800 kB	DE / DE
Type 2031 fiche technique \| vanne pneumatique à membrane avec actionneur en inox	1 MB	FR / FR
类型 2031 参数表 \| 二位二通隔膜阀，锻造阀体，焊接端和卡箍连接，端口连接 DN8 — 100	2 MB	ZH / CN
类型 2031 铸造阀门参数表 \| 二位二通隔膜阀，铸造阀体，焊接端和卡箍连接，端口连接 DN4 — 50	2 MB	ZH / CN

User Manuals

Description	Filesize	Language / Country
Additional manual Type 2031 \| PE05 Removing the pressure piece from diaphragm valves	1 MB	EN,FR,DE / EU
Additional manual Type 2xxx 3xxx \| Angles for self-draining of diaphragm valves	667 kB	EN / EU
Additional manual Type xxxx \|PX51 use in the potentially explosive area Category 2	273 kB	EN,FR,DE / EU
OnOff position feedback	2 MB	EN,FR,DE / EU
Operating Instructions Type 2030 203X \| Piston-operated diaphragm valve, DN65 ? DN100	2 MB	EN,FR,DE / EU
Operating Instructions Type 2030 203X \| Piston-operated diaphragm valve, DN8 DN65	2 MB	EN / EU
Quickstart Type 2030 203X \| Piston operated diaphragm valve, diameter DN65 - DN100	1 MB	EN,FR,DE / EU
Quickstart Type 2030 203X \| Piston operated diaphragm valves, Diameter DN8 - DN65	1 MB	EN / EU
Quickstart Type 2031 \| INOX 2/2-way diaphragm valve	928 kB	EN / EU
Service manual Type 2000 2002 2012 203X \| Stroke limitation	2 MB	EN,FR,DE / EU
Service manual Type 2030 203X \| Replacement of seal set / Conversion of control function	2 MB	EN / EU
Bedienungsanleitung Typ 2030 203X \| Kolbengesteuerte Membranventile, Nennweiten DN8 - DN65	2 MB	DE / DE
Manual de usuario Tipo 2030 \| Cabezal de control [DN65-DN80-DN100]	296 kB	ES / ES
Manual de usuario Tipo 2030 \| Cabezal de control [DN8-DN65]	364 kB	ES / ES
Manuel d'utilisation Type 2030 203X \| Vannes à membrane, diamètre nominale DN8 DN65	2 MB	FR / FR
Manuel de service Type 2030 2031 2032 2033 2037 \| Replacement of the seal set	2 MB	FR / FR
Manuel supplémentaire Type 2xxx 3xxx \| Angle de vidange automatique des vannes à membrane	657 kB	FR / FR
Návod k obsluze Typ 2030, 2031, 2031 K, 2032, 2033, 2037 \| Membránové ventily s pístovým	3 MB	CS / CZ
Quickstart Typ 2030 203X \| Kolbengesteuerte Membranventile,Nennweiten DN8 - DN65	992 kB	DE / DE
Quickstart Typ 2031 \| INOX 2/2-Wege-Membranventil	931 kB	DE / DE
Quickstart Type 2030 203X \| Vanne à membrane commandée par pistion, DN8 - DN65	1 MB	FR / FR
Quickstart Type 2031 \| INOX Vanne à membrane 2/2 voies	919 kB	FR / FR
Serviceanleitung Typ 2030 2031 2032 2033 2037 \| Wechsel vonDichtungssätzen	2 MB	DE / DE
Zusatzanleitung Typ 2xxx 3xxx\| Winkelangaben zur Selbstentleerung von Membranventilen	664 kB	DE / DE
使用说明 2030、2031、2031 K、2032、2033、2037 型 \| 活塞控制隔膜阀，驱动器尺寸 40-125 mm，标称直径	4 MB	ZH / CN

EU Declaration of Conformity

	Description	Filesize	Language / Country
	EU-DoC\|EU Declaration	2 MB	EN,FR,DE

Flyers and Catalogues

Description	Filesize	Language / Country
Product Overview Process and Control Valves	31 MB	EN / EU
Advantages Tube Valve Body	154 kB	EN / EU
Diaphragm competence for hygienic applications	1 MB	EN / EU
On/Off and Control Valves	1 MB	EN / EU

Videos

	Description	Filesize	Language / Country
	How to replace Buerkert Diaphragms DN15-DN100	22 MB	EN / EU
	Videoanleitung Buerkert Membranwechsel DN15-DN100	22 MB	DE / DE

Spare and wear parts

Position	Article Number	Description
01	11492	Sealing part set actuator PPS ANTG F