Promises are Good. Performance is Best.

Ex Certified Valves

General Specifications

Function
explosion-proof valves
Media
combustible gases according NPT 260, gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, liquid fuels
Body Materials
brass, galvanized steel, nickel plated brass, nickel plated steel, without non-ferrous metals, stainless steel 1.4101
The materials refer to parts in contact with the media.
Seal Materials
NBR, PTFE, FPM, CR, EPDM, special seal materials
Options
special threads, special flanges, function NO, damping, limit switches (NAMUR), manual override, approvals, special voltage, circuit amplifier, mounting
Remark
The valves' technical design is based on media and application requirements. This can lead to deviations from the general specifications shown on the data sheet with regards to the design, sealing materials and characteristics.

Valve Types

KBS 15 Ex

KBS 15 Ex

Ports
KBS threads NPT 3/8
Function
NC
Pressure Range
psi 600 1500 2250
orifice [mm] 3 2 1.5
cv Value
l/min 5.2 1.3 1.1
DN [mm] 3 2 1.5
Media
gaseous, liquid
Flow Direction
A ⇒ B as marked
Switching Cycles
120 1/min
Switching Time [ms]
opening 250 closing 160
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
4,2
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

KBS 15 Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

KBS 15 Ex Drawing

Circuit Symbols

KB 15 Ex

KB 15 Ex

Ports
KB threads NPT 3/8
Function
NC
Pressure Range
psi 150 150 240 450 750 1500
DN [mm] 8 6 5 4 3 2
cv Value
l/min 24.0 17.4 13.5 11.0 4.1 1.7
DN [mm] 8 6 5 4 3 2
Media
gaseous, liquid
Flow Direction
A ⇒ B as marked
Switching Cycles
210 1/min
Switching Time [ms]
opening 100 closing 175
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
2,8
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

KB 15 Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

KB 15 Ex Drawing

Circuit Symbols

MK 10 Ex

MK 10 Ex

Ports
MK threads NPT 1/4 - NPT 3/4
Function
NC
Pressure Range
0-240 psi
cv Value
2.9 GPM
Media
gaseous, liquid, contaminated
Flow Direction
A ⇒ B as marked
Switching Cycles
200 1/min
Switching Time [ms]
opening 80 closing 140
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 1,5
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet
AC direct-current magnet with integrated rectifier
Protection
IP65
Energized Duty Rating
ED 100%
Connection
terminal box, 3 m flying leads

MK 10 Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 10 Ex Drawing

Circuit Symbols

MK / FK 15 Ex

MK / FK 15 Ex

Ports
MK threads NPT 3/8 - NPT 3/4
FK flanges ANSI 150 / 600 / 1500
Function
NC
Pressure Range
0-240 / 0-600 / 0-960 / 0-1500 psi
cv Value
5.5 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
A ⇒ B as marked
Switching Cycles
200 1/min
Switching Time [ms]
opening 80 closing 80
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 3,8 FK 5,0
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 15 Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 15 Ex Drawing

FK 15 Ex Drawing

Circuit Symbols

MK / FK 20 Ex

MK / FK 20 Ex

Ports
MK threads NPT 3/4 - NPT 11/4
FK flanges ANSI 150 / 600 / 1500
Function
NC
Pressure Range
0-240 / 0-600 / 0-960 / 0-1500 psi
cv Value
8.6 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
A ⇒ B as marked
Switching Cycles
150 1/min
Switching Time [ms]
opening 110 closing 110
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 5,5 FK 7,5
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 20 Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 20 Ex Drawing

FK 20 Ex Drawing

Circuit Symbols

MK / FK 25 Ex

MK / FK 25 Ex

Ports
MK threads NPT 1 - NPT 11/2
FK flanges ANSI 150 / 600 / 1500
Function
NC
Pressure Range
0-240 / 0-600 / 0-960 / 0-1500 psi
cv Value
12.9 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
A ⇒ B as marked
Switching Cycles
130 1/min
Switching Time [ms]
opening 130 closing 130
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 8,0 FK 10,5
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 25 Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 25 Ex Drawing

FK 25 Ex Drawing

Circuit Symbols

MK / FK 32 Ex

MK / FK 32 Ex

Ports
MK threads NPT 11/4 - NPT 11/2
FK flanges ANSI 150 / 600 / 1500
Function
NC
Pressure Range
0-240 / 0-600 / 0-960 psi
cv Value
16.3 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
A ⇒ B as marked
Switching Cycles
120 1/min
Switching Time [ms]
opening 440 closing 250
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 13,5 FK 17,5
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 32 Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 32 Ex Drawing

FK 32 Ex Drawing

Circuit Symbols

MK / FK 40 Ex

MK / FK 40 Ex

Ports
MK threads NPT 11/2 - NPT 2
FK flanges ANSI 150 / 600 / 1500
Function
NC
Pressure Range
0-240 / 0-600 / 0-960 psi
cv Value
21.3 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
A ⇒ B as marked
Switching Cycles
90 1/min
Switching Time [ms]
opening 520 closing 150
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 14,0 FK 18,0
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 40 Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 40 Ex Drawing

FK 40 Ex Drawing

Circuit Symbols

MK / FK 50 Ex

MK / FK 50 Ex

Ports
MK threads NPT 2
FK flanges ANSI 150
Function
NC
Pressure Range
0-240 psi
cv Value
32.6 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
A ⇒ B as marked
Switching Cycles
40 1/min
Switching Time [ms]
opening 400 closing 400
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 25,5 FK 31,0
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 50 Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 50 Ex Drawing

FK 50 Ex Drawing

Circuit Symbols

MK 10 DR Ex

MK 10 DR Ex

Ports
MK threads NPT 1/4 - NPT 3/4
Function
NC
Pressure Range
0-240 psi
A ⇒ B max. 240 psi
B ⇒ A max. 240 psi
A ⇒ C max. 240 psi
C ⇒ A max. 240 psi
cv Value
3.0 GPM
Media
gaseous, liquid, contaminated
Flow Direction
see pressure range
Switching Cycles
200 1/min
Switching Time [ms]
opening 80 closing 140
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 2,2
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet
AC direct-current magnet with integrated rectifier
Protection
IP65
Energized Duty Rating
ED 100%
Connection
terminal box, 3 m flying leads

MK 10 DR Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 10 DR Ex Drawing

Circuit Symbols

MK / FK 15 DR Ex

MK / FK 15 DR Ex

Ports
MK threads NPT 3/8 - NPT 3/4
FK flanges ANSI 150 / 600
Function
NC
Pressure Range
0-240 / 0-600 psi
A ⇒ B max. 600 psi
B ⇒ A max. 240 psi
A ⇒ C max. 600 psi
C ⇒ A max. 240 psi
cv Value
5.0 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
see pressure range
Switching Cycles
200 1/min
Switching Time [ms]
opening 80 closing 80
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 4,3 FK 5,9
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 15 DR Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 15 DR Ex Drawing

FK 15 DR Ex Drawing

Circuit Symbols

MK / FK 20 DR Ex

MK / FK 20 DR Ex

Ports
MK threads NPT 3/4 - NPT 11/4
FK flanges ANSI 150 / 600
Function
NC
Pressure Range
0-240 / 0-600 psi
A ⇒ B max. 600 psi
B ⇒ A max. 240 psi
A ⇒ C max. 600 psi
C ⇒ A max. 240 psi
cv Value
7.7 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
see pressure range
Switching Cycles
150 1/min
Switching Time [ms]
opening 110 closing 110
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 6,0 FK 8,4
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 20 DR Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 20 DR Ex Drawing

FK 20 DR Ex Drawing

Circuit Symbols

MK / FK 25 DR Ex

MK / FK 25 DR Ex

Ports
MK threads NPT 1 - NPT 11/2
FK flanges ANSI 150 / 600
Function
NC
Pressure Range
0-240 / 0-600 psi
A ⇒ B max. 600 psi
B ⇒ A max. 240 psi
A ⇒ C max. 600 psi
C ⇒ A max. 240 psi
cv Value
12.9 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
see pressure range
Switching Cycles
130 1/min
Switching Time [ms]
opening 130 closing 130
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 9,2 FK 12,0
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 25 DR Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 25 DR Ex Drawing

FK 25 DR Ex Drawing

Circuit Symbols

MK / FK 32 DR Ex

MK / FK 32 DR Ex

Ports
MK threads NPT 11/4 - NPT 11/2
FK flanges ANSI 150 / 600
Function
NC
Pressure Range
0-240 / 0-600 psi
A ⇒ B max. 600 psi
B ⇒ A max. 240 psi
A ⇒ C max. 600 psi
C ⇒ A max. 240 psi
cv Value
16.2 GPM (A ⇒ B), 10.3 GPM (A ⇒ C)
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
see pressure range
Switching Cycles
120 1/min
Switching Time [ms]
opening 440 closing 250
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 18,0 FK 22,0
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 32 DR Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 32 DR Ex Drawing

FK 32 DR Ex Drawing

Circuit Symbols

MK / FK 40 DR Ex

MK / FK 40 DR Ex

Ports
MK threads NPT 11/2 - NPT 2
FK flanges ANSI 150
Function
NC
Pressure Range
0-240 psi
A ⇒ B max. 240 psi
B ⇒ A max. 240 psi
A ⇒ C max. 240 psi
C ⇒ A max. 240 psi
cv Value
21.3 GPM (A ⇒ B), 13.3 GPM (A ⇒ C)
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
see pressure range
Switching Cycles
90 1/min
Switching Time [ms]
opening 520 closing 150
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 18,5 FK 23,0
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 40 DR Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 40 DR Ex Drawing

FK 40 DR Ex Drawing

Circuit Symbols

MK / FK 50 DR Ex

MK / FK 50 DR Ex

Ports
MK threads NPT 2
FK flanges ANSI 150
Function
NC
Pressure Range
0-240 psi
A ⇒ B max. 240 psi
B ⇒ A max. 150 psi
A ⇒ C max. 240 psi
C ⇒ A max. 240 psi
cv Value
32.6 GPM
Media
gaseous, liquid, highly viscous, gelatinous, contaminated
Flow Direction
see pressure range
Switching Cycles
40 1/min
Switching Time [ms]
opening 400 closing 400
Media Temperature [°F]
DC: -4 to 104
AC: -4 to 104
Ambient Temp. [°F]
DC: -4 to 104
AC: -4 to 104
Weight [kg]
MK 31,5 FK 38,5
Nominal Voltage
UN 24 V DC, UN 230 V 40-60 Hz AC
Actuation
DC direct-current magnet, AC direct-current magnet with, separate rectifier outside , of the explosion-proof area
Protection
IP65
Energized Duty Rating
ED 100%
Connection
M16x1,5 terminal box

MK / FK 50 DR Ex Data Sheet

General Operating Instructions

Certificate

Operating Instructions ATEX

Declaration of Conformity coil

Declaration of Conformity non-electrical equip. cat. 2

Declaration of Conformity non-electrical equip. cat. 3

MK 50 DR Ex Drawing

FK 50 DR Ex Drawing

Circuit Symbols