BURKERT 361031 Type 2104 is an externally controlled diaphragm T-valve consisting of a pneumatically operated piston actuator, a diaphragm, and a T-valve body. The proven and robust actuator with a stainless steel or PPS housing ensures reliable use in hygienic or aggressive ambient conditions. The flow-efficient valve bodies with minimal dead space enable high flow rates and a wide range of possible uses in the food, beverage, biotechnology, and pharmaceutical industries.

The actuator features a compact, autoclavable design with gap-free seals. The integration of automation units Type ELEMENT is possible in all configuration levels, and a fieldbus interface can also be integrated. The valve offers degrees of protection IP65/67 and NEMA Type 4X, displaying high chemical resistance.

General Technical Data

Product Properties	Details
Block body (VH/VI)	Stainless steel block material 1.4435 according to DIN EN 10088 and 316L according to ASTM A479 / A479M / ASME BPE
Diaphragm	EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)
Actuator	DN 08...65, PPS; DN 65...100, stainless steel 1.4308
Actuator casing	DN 08...65, stainless steel 1.4561 (316Ti); DN 65...100, stainless steel 1.4308
Standard surface quality	Internally electrically polished: Ra ≤ 0.38 μm (ASME BPE SF4 / DIN HE4); Internally mechanically polished: Ra ≤ 0.5 μm (ASME BPE SF1)
Maximum pilot pressure	10 bar (7 bar for actuator size 130, 225)
Pilot air port	Push-in connector for outer diameter, ∅ 6 mm or 1/4" (standard), thread G 1/8"
Operating medium	Neutral gases and liquids, highly purified, sterile, aggressive or abrasive mediums
Control medium	Neutral gases, air
Ambient temperature	-10 °C...+ 60 °C, autoclavable

Control Functions

Symbol	Description
	Control function A (CF A) Pneumatically operated T-valve Normally closed by spring force
	Control function B (CF B) Pneumatically operated T-valve Normally opened by spring force
	Control function I (CF I) Pneumatically operated T-valve on either side Switching position dependent on external control

Approvals and 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) and IECEx (IECEx EPS 18.0007X).
• 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: Suitable for use with food and beverages.
• TA Luft: Technical instruction on air quality control.

Permissible Temperatures

WARNING

When using a pilot valve or a control unit mounted on the actuator, observe their permissible temperature ranges.

Ambient Temperature

Actuator housing material	Actuator size	Permissible ambient temperature [°C]
PPS	50 (D), 70 (M), 90 (N), 130 (P)	-10...+60 (Standard) / -10...+100 (Optional)
Stainless steel	225 (L)	-10...+100

Medium Temperature for Diaphragms

Diaphragm material	Medium temperature [°C]	Comments
EPDM (AD)	-10...+143	Steam sterilisation max. +150°C for 60 min
FKM (FF)	0...+130	No steam, dry heat max +150°C for 60 min
PTFE (EA)	-10...+130	Steam sterilisation max. +140°C for 60 min
Advanced PTFE (EU)	-5...+143	Steam sterilisation max. +150°C for 60 min
GYLON® (ER)	-5...+130	Steam sterilisation max. +140°C for 60 min

Dimensions

Actuator

Diaphragm size	Actuator size ∅	∅ A	HS with 8691 / 8695	HS with 8690 / 8697	H+M (MT86)
8	50 (D)	65	232	219	138
15	50 (D)	65	240	226	146
15	70 (M)	92	262	229	166
25	90 (N)	120	301	269	205
40	130 (P)	160	370	337	274
50	130 (P)	160	379	346	282
65	130 (P)	160	383	350	287
65	225 (L)	245	427	395	330

T-Body with Welded Connection

(Dimensions in mm, unless otherwise stated. Refer to full datasheet for comprehensive port connection variants including DIN EN ISO 1127, ASME BPE, and SMS 3008).

Installation Notes

TIP

For pipelines, the inclination angles specified in the valid ASME BPE standard are recommended. Ensure that pipelines are free of impurities (seal material, metal chips) before connection.

Welding the Valve Body

WARNING

Damage to the diaphragm or the actuator The diaphragm and actuator can be damaged when welding the valve body into the pipeline. Remove the actuator and diaphragm from the valve body before installation.

Tightening Torques for Body Connection

Diaphragm size	EPDM, FKM [Nm]	PTFE, advanced PTFE, GYLON® [Nm]
8	2	2.5
15	3.5	4
20	4	4.5
25	5	6
40	8	10
50	12	15
65	20	30
80	30	40
100	40	50

(Tolerance: +10 %)