BURKERT Type 2033 tank bottom diaphragm valve with pneumatic plastic actuator (Type CLASSIC).

The externally controlled diaphragm valve Type 2033 consists of a pneumatically operated piston actuator, a diaphragm and a tank bottom 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).

• Valve body and diaphragm are available in various materials and variants
• Wetted surfaces from Ra ≤ 0.38 µm...≤ 1.6 µm (optionally electropolished)
• Available in all common connection sizes and variants

General Technical Data

Product Properties	Description
Block body material	Stainless steel block material 1.4435 according to DIN EN 10088 and 316L according to ASTM A479 / A479M
Diaphragm material	EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)
Actuator material	PPS, PA
Diaphragm size	8...100
Standard surface quality	Internally electrically polished: Ra ≤ 0.38 μm (ASME BPE SF4 / DIN HE4)
Operating medium	Neutral gases and liquids, highly purified, sterile, aggressive or abrasive mediums
Control medium	Neutral gases, air

Control Functions

Control Function	Description
A (CF A)	Pneumatically operated tank bottom valve. Normally closed by spring force.
B (CF B)	Pneumatically operated tank bottom valve. Normally opened by spring force.
I (CF I)	Pneumatically operated tank bottom valve on either side. Switching position dependent on external control.

Approvals and Conformities

Conformity Notes

The approvals and conformities listed below must be stated when making enquiries. Not all available variants can be supplied with the below mentioned approvals or conformities.

• Explosion Protection: ATEX: EPS 18 ATEX 2 008 X II 2G Ex h IIC T4…T2 Gb / II 2D Ex h IIIC T135 °C…T300 °C Db. IECEx: IECEx EPS 18.0007X Ex h IIC T4…T2 Gb / Ex h IIIC T135 °C…T300 °C Db.
• 3-A Sanitary Standards Inc.: The products comply with 3-A Sanitary Standards Inc (3-A SSI) as per certificate.
• FDA: The diaphragms comply with the Code of Federal Regulations published by the FDA.
• USP: The diaphragms are tested according to USP Class VI.
• EC Regulation 1935/2004: The diaphragms are suitable for use with food and beverages.

Materials

No.	Element	Material
1	Valve body	Stainless steel
2	Diaphragm	EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)
3	Interface	Stainless steel 1.4404
4	Socket	Sinter metal
5	Pilot air ports	Stainless steel 1.4305
6	Piston seal	FKM
7	Cover	Polyphenylene sulphide PPS (standard), Polyamide PA (on request)
8	Transparent cap	Polysulfone PSU

Dimensions

Actuator

Diaphragm size	Actuator size ∅	∅ A	C	K	H
8	40 (C)	53	34	G 1/8"	111
15	50 (D)	64	39	G 1/8"	137
15	63 (E)	80	52	G 1/4"	154
20	63 (E)	80	52	G 1/4"	165
20	80 (F)	101	52	G 1/4"	186
25	63 (E)	80	52	G 1/4"	170
25	80 (F)	101	60	G 1/4"	190

Tank Bottom Body with Welded Connection

Diaphragm size	Port connection DN	∅B	C1	D	∅D1	s	L
8	8	50	8	35°	13.5	1.6	5
15	15	65	12	35°	21.3	1.6	4
20	20	85	12	35°	26.9	1.6	5.6
25	25	120	16	35°	33.7	2	8
40	32	150	18	35°	42.4	2	20
50	50	180	22	35°	60.3	2	12

Performance Specifications

Pressure Limits

For low operating pressures, optional variants with reduced spring force (EC04) are recommended. Pressure data [bar]: Overpressure to atmospheric pressure. Static: When closed, the valve is pressurised on one side with the maximum operating pressure.

Diaphragm size	Actuator size ∅	Pilot pressure [bar]	Max static operating pressure EPDM, FKM [bar]	Max static operating pressure PTFE/EPDM [bar]
8	40 (C)	5.0...7	10	10
15	50 (D)	5.0...7	10	-
15	63 (E)	5.0...7	10	10
20	63 (E)	5.5...7	10	10
20	80 (F)	5.0...7	10	10
25	80 (F)	5.5...7	10	10