Operating Instructions
Design:3- and 5-way solenoid valve, internally piloted

Type 6518

Marking (example):
Body Material
PA=Polyamide
AL=Aluminium

Seal Materials and Fluids handled:
See Table 1.
Fluid and Ambient Temperature:
For Hazardous Locations Div. 1 (T4 rated)
Max. Ambient Temperature
104 °F (40 °C)
Max. Fluid Temperature
140 °F (60 °C)
For Hazardous Locations Div. 1 (T6 rated)
Max. Ambient Temperature
104 °F (40 °C)
Max. Fluid Temperature
140 °F (60 °C)

Seal Material
PB=NBR and PUR
NBR =
NBR
Circuit function
C = 3-way, Normally Closed
D = 3-way, Normally OpenFor Intrinsically Safe Apparatus for use in Class I, II and III,Division 1 Hazardous Locations.
Max. Ambient Temperature
140 °F (60 °C)
Max. Fluid Temperature
140 °F (60 °C)
For Hazardous Locations Div. 2 and Ordinary Locations:
See Table 1.
Pressure Range:
Maximum inlet pressure see label on valve.
Installation:
Before installing valve ensure that piping etc. is free of foreign
matter (metal shavings, pipe sealing materials, welding scaleetc.). Installation as required but preferable with coil uppermost.
Installation in this position tends to prevent foreign matterremaining in core tube (increased life). Do not put any loads oncoil unit.

Operating Instructions 0605/09_EN-EN_00800029

PTFE tape is recommended for sealing ports. Mounting isaccomplished by means of four M4 x 8 mm tapped holes
located on the valve underside. Letters on valve body indicatepressure port, exhaust and outlet of the valve.

Table 1

Item No.
Voltage / Frequency / Power Consumption
Maximum Pressure
Approvals
The valve is either approved asGeneral Purpose valve for Hazardous Locations
Class I, Division 1, Group A, B, C, D
Class II, Division 1, Group E, F, G
Class III, Division 1 and 2
Operating Temperature T 4
orGeneral Purpose valve for Hazardous Locations
Class I, Division 1, Group A, B, C, D
Class II, Division 1, Group E, F, G
Class III, Division 1 and 2
Operating Temperature T 6
orIntrinsically Safe Apparatus for Hazardous Locations
Class I, Division 1, Group A, B, C, D
Class II, Division 1, Group E, F, G
Class III, Division 1 and 2
Operating Temperature T 6orFM approved as
Nonincendive for Hazardous Locations
Class I, Division 2, Group A, B, C, D
Class II, Division 2, Group F, G
Class III, Division 1 and 2
Operating Temperature T 4
UL listed for General Purpose
CSA approved for General Purpose
See label on the valve.

Seal Materials

Fluid

Temperatures [°F]

PB

Buna “N”

Air

Fluid Temp.

+ 10 to + 140+ 10 to + 140

Ambient+ 10 to + 140+ 10 to + 140

NBROperating Instructions
For this product to be considered UL-listed and CSA approvedfor General Purpose and FM approved for Hazardous Locations
Division 2, it must be in conjunction with the type 2509 cable plugconnector (Electrically Operated Valves Parts, YSYI2).
The connector and gasket must be assembled to the valve with thescrew provided after the connection of the wire leads. This valve
and connector assembly is delivered together and is to be used asone unit.

Wiring Diagram
Electrical Connection Type 2509

For valves to be used in Intrinsically Safe Applications the positivepole is identified by a “+” on the pin or wire No. 1 has to be connected to the “+”.
See Control Drawing for the Rules of Interconnection.
Power*Ground (green dot)

Warning:
All valves to be used in Intrinsically Safe Applications must beclearly marked as Intrinsically Safe Apparatus.
Trouble-Shooting:
Check port connections, minimum operating pressure differential
if required and supply voltage. Ensure pilot hole in piston is clear
and pilot bore in the valve outlet is not abstracted. If core does notpull in, check for short circuit, coil burn-out or foreign matter impeding core movement. A jammed or missing core causes the coilto overheat in the case of AC supply.

Power** Orientation is not important

Electrical Connection:
Ensure supply voltage/frequency corresponds with that on label.
Voltage tolerance is ± 10 %.
Available Electrical Connections see “Marking”.
Wiring diagram see above.

Warning:
These products are designed to operate in a wide variety of applications, it is the user’s responsibility to select a model that is
appropriate for the application. This product is designed to beinstalled only by suitably qualified and trained personnel.
Specifications should not be exceeded under any circumstances.
The torque for the terminal screw on type 2509 is 0,5 Nm(4,4 lbf-in.).
Changes made to this product will render any applicable warranty
null and avoid.
Specifications subject to change without notice.
Any questions? Please call Bürkert Contromatic Technical Serviceat (949) 223 31 00.

Germany
Contact address:
Bürkert Fluid Control Systems
Sales Center
Chr.-Bürkert-Str. 13-17
D-74653 IngelfingenTel. + 49 (0) 7940 - 10 91 111
Fax + 49 (0) 7940 - 10 91 448
E-mail: info@de.buerkert.com
International
Contact addresses can be found on the Internet at:
www.burkert.com

BürkertCompanyLocations