BURKERT Type 0127 is a unique 2/2-way or 3/2-way rocker solenoid valve pre-destined for use in laboratory, medical, and analytical technology as the pioneer of small media-separated valves. It continues to set the pace today with its rocker technology, which activates the separating diaphragms between the actuator and fluid. It guarantees precise switching of tiny volumes of even aggressive media at the lowest temperature input, thanks to the coil. It is also very easy to flush and is characterized by its minimal internal volume and freedom from almost all dead space. The valves can be stacked on manifolds and can be wired with central wiring on request.

• For the highest chemical resistance requirements
• Compact design with 16 mm width and a flow coefficient of up to 0.058
• USP Chapter 87/88 Class VI
• Flexible design for customised solutions
• High back-pressure tightness, excellent cleanability and 100% duty cycle

General Technical Data

Product properties
Dimensions	See Dimensions section
Seal Material	FFKM, FKM, EPDM
Valve body Material	PEEK, PPS (PVDF on request)
Internal volume	Sub-base: from 44 μl Tube connection: from 35 μl G 1/8: from 100 μl UNF 1/4"- 28: from 25 μl < 10 μl available on request
Orifice	DN 0.8...DN 1.6
Circuit function	A, B and T
Typical product service life	10 mio. switching cycles (according to laboratory endurance test with FKM and EPDM)
Duty cycle	100 % continuous operation Manifold mounting: If medium or ambient temperatures are above + 40 °C: intermittent operation 40 % (minimum 10 min)
Switching time	Open: approx. 25 ms (pressure build-up 0...10 %) Closing: approx. 25 ms (pressure reduction 100...90 %)
Operating voltage	12 V DC, 24 V DC, 24 V UC (other voltages on request)
Nominal power	3.4 W (Variants with internal power reduction possible)
Voltage tolerance	± 10 %
Operating medium	Resistant to neutral and aggressive gases and liquids
Medium temperature	Max. - 10 °C...+ 55 °C
Viscosity	Max. 21 mm²/s
Electrical connection	Cable plug Type 1054 (Two FEP-leads 0.2 mm² (AWG24), length 500 mm) Rectangular cable plug Type 2505
Port connection	Bürkert sub-base (16 × 27 mm) Tube connection G 1/8 UNF 1/4"- 28
Degree of protection	IP65 with flying leads and cable plug Type 1054 IP30 with rectangular cable plug Type 2505
Foods and beverages/Hygiene	FDA on request only with seal material EPDM USP Chapter 87/88 Class VI on request only with body material PPS/PEEK and seal material EPDM
Installation	As required, preferably with actuator upright
Ambient temperature	Max. + 55 °C

Medium Pressure

Note

• Deviating pressure ranges are possible on request.
• For low dead volume variants, the back pressure is limited to a maximum of 1 bar.

Circuit functions	Orifice [mm]	Port connection	Max. differential pressure [bar]
CF A (2/2-way, Direct-acting, Normally closed)	0.8	Sub-base	0...6
	1.2	UNF 1/4"-28, Sub-base	0...5
	1.6	UNF 1/4"-28	0...2
	1.6	Sub-base, G 1/8, Tube connection	Vac...2
CF B (2/2-way, Direct-acting, Normally open)	0.8	Sub-base	0...6
	1.2	UNF 1/4"-28, Sub-base	0...5
	1.6	UNF 1/4"-28	0...2
	1.6	Sub-base, G 1/8, Tube connection	Vac...2
CF T (3/2-way, Direct-acting, Universal)	0.8	Sub-base	0...6
	1.2	UNF 1/4"-28, Sub-base	0...5
	1.6	UNF 1/4"-28	0...2
	1.6	Sub-base, G 1/8, Tube connection	Vac...2

Medium Temperature

The permissible medium temperature depends on the seal material and the orifice.

Description	Orifice	Seal material	Temperature range
Medium temperature	DN 0.8	FFKM	+5 °C...+50 °C
	DN 0.8	FKM	0 °C...+50 °C
	DN 0.8	EPDM	-5 °C...+50 °C
	DN 1.2 and DN 1.6	FFKM	+10 °C...+50 °C
	DN 1.2 and DN 1.6	FKM	+5 °C...+50 °C
	DN 1.2 and DN 1.6	EPDM	0 °C...+50 °C
Medium temperature with limitation on switching time and life expectancy	DN 0.8	FFKM	0 °C...+50 °C
	DN 0.8	FKM	-5 °C...+55 °C
	DN 0.8	EPDM	-10 °C...+50 °C
	DN 1.2 and DN 1.6	FFKM	+5 °C...+50 °C
	DN 1.2 and DN 1.6	FKM	0 °C...+55 °C
	DN 1.2 and DN 1.6	EPDM	-5 °C...+50 °C

Internal Volume

The internal volume is depending on valve body.

Body	2-way (low dead volume) Fluid chamber	2-way (low dead volume) Total	2-way Fluid chamber	2-way Total	3-way Fluid chamber	3-way Total
Sub-base	44 μl	54 μl	97 μl	106 μl	90 μl	106 μl
G 1/8	-	-	94 μl	207 μl	88 μl	228 μl
UNF 1/4"- 28	25 μl	69 μl	55 μl	79 μl	54 μl	95 μl
Tube connection	35 μl	105 μl	67 μl	135 μl	73 μl	178 μl

Material Specifications

No.	Element	Material
1	Rounded head screw M2.5 (from end to end)	Stainless steel
2	Coil	Epoxy
3	Actuator housing	PPS
4	Diaphragm (Wetted)	FFKM, FKM, EPDM
5	Valve body (Wetted)	PEEK, PPS, (PVDF on request)
6	Flange seal (Wetted)	FFKM, FKM, EPDM

Dimensions

Threaded port variant PEEK G 1/8 with rectangular plug Type 2505

Note

Dimensions in mm. Other variants (UNF 1/4"-28, Tube connector, Sub-base) are available on request.

Safety and Installation

Risk of injury from high pressure

Before working on the system or device, switch off the pressure and vent/empty the lines.

Risk of injury from electric shock

Before working on the system or device, switch off the power supply and secure to prevent reactivation. Observe the applicable accident prevention and safety regulations for electrical devices.

Electrostatically sensitive components

The device contains electronic components that are susceptible to the effects of electrostatic discharging (ESD). Observe the requirements for minimizing or avoiding the possibility of damage caused by sudden electrostatic discharge in accordance with EN 61340-5-1.