MODEL
NUMBER
Models available for quick shipment, usually within one week after factory
receipt of a complete purchase order, through the Expedite Ship Plan (ESP)
MODEL NUMBER CODE, MATERIALS OF CONSTRUCTION AND TANK CONNECTION
B24-1B10
C24-1B10
C25-1B10
C25-2B10
B25-1B10
Model
Code
Minimum
S.G.
0.85
0.84
0.84
0.84
0.84
0.75
Fabricated
Steel
400 Series
SS
316L SS
316 SS
Cast Iron
Cast Iron
Chamber
Material
Cast Iron
Attraction
Sleeve
400 Series
SS
316L SS
316 SS
400 Series
SS
300 psi @ 422° F
(21 bar @ 217° C)
600 psi @ 489° F
(41 bar @ 254° C)
500 psi
(34 bar)
900 psi
(62 bar)
Right
Hand
316 SS
Float
Material
Trim
Material
Max. WSP
Rating
Max. Pressure
@ 100° F (38° C)
Try Cock
Mounting
250 psi @ 406° F
(17 bar @ 207° C)
400 psi
(28 bar)
N/A
W24-1B10
W25-1B10
W29-1B10
W60-1B10
Left
Hand
ELECTRIC SWITCH MECHANISM AND ENCLOSURE
(Additional models on next page)
Max.
Process
Temp
° F (° C)
B24 & C24 only
Contacts
Set
Points
TYPE 4X/7/9 Aluminum Enclosure
Class
I,
Div. 1,
Groups C & D
Class
I,
Div. 1,
Group B
Switch Description
Series B
Snap Switch
250
(121)
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
1
1
1
1
1
1
BKP
BNP
CKP
CNP
FKP
FNP
BKT
BNT
CKT
CNT
FKT
FNT
Series C
Snap Switch
Series F
Hermetically Sealed
Snap Switch
450
(232)
750
(399)
PNEUMATIC SWITCH MECHANISM AND ENCLOSURE
Switch Description
Maximum
Supply Pressure
psig
bar
100
60
100
40
7
4
7
3
Maximum
Process Temp.
°F
°C
400
400
400
400
204
204
204
204
Bleed Orifice
Diameter
Inches
mm
.063
.094
—
—
1.6
2.3
—
—
All except
B24, C24
NEMA 1
JDE
JEE
KOE
KOG
Code
B24, C24
NEMA 1
—
JEG
—
KOG
Series J Bleed Type
Series K Non-Bleed Type
Cast iron models limited to maximum service temperature of
+406° F (+207° C) or switch mechanism temperature rating if lower.
Models B24, B25, W24, and W25 include brass inner liners.
Models C24 & C25 are intended for non-boiler service as they do
not contain a chamber liner.
Process temperature based on +100° F (+38° C) ambient
Consult factory for manual reset switches.
6
MAGNETROL [ MAGNETROL INTERNATIONAL, INC. ]
