Magnetrol B73 - Model Identification; Size and Type of Process Connection; Select Pneumatic Switch Mechanism & Enclosure; Select Electric Switch Mechanism & Enclosure

2
Pneumatic switch Max. supply pressure Max. liquid temperature Bleed orifice Ø Code (NEMA 3R encl.)
description bar (PSIG) °C (°F) mm (inches) mat'l. code 1 mat'l. code 2, 4
Series J bleed type 6.9 bar (100 PSIG) 200°C (400°F) 1.60 mm (0.063") JDG JDE
4.1 bar (160 PSIG) 200°C (400°F) 2.39 mm (0.094") JEG JEE
4.1 bar (160 PSIG) 230°C (450°F) 1.40 mm (0.055") JFG JFE
Series K non bleed type 6.9 bar (100 PSIG) 200°C (400°F) — — KOE
2.8 bar (140 PSIG) 200°C (400°F) — KOG —
SELECT ELECTRIC SWITCH MECHANISM & ENCLOSURE ➁
All models with material of construction code 1 All models with material of construction codes 2 and 4
NEMA 4X NEMA 7/9 BASEEFA CENELEC NEMA 4X NEMA 7/9 BASEEFA CENELEC
cast aluminium cast iron cast iron cast iron cast aluminium cast iron cast iron cast iron
Switch
1"
M 20
1"
M20
3/4"
M20
3/4" 1"
M 20
1"
M20
3/4"
M20
3/4"
Description
x PG 16 x x x PG 16 x x
NPT
1.5
NPT
1.5
NPT
1.5
NPT NPT
1.5
NPT
1.5
NPT
1.5
NPT
Series A – 230°C SPDT AAP A2P A3P AKR AK8 AU8 AK7 AU7 AAQ A2Q A3Q AKY AK6 AU6 AK5 AU5
Mercury switch (450°F) DPDT ADP A8P A9P ANR AN8 AX8 AD7 AW7 ADQ A8Q A9Q ANY AN6 AX6 AD5 AW5
Series B – 120°C SPDT BAP B2P B3P BKR BK8 BU8 BK7 BU7 BAQ B2Q B3Q BKY BK6 BU6 BK5 BU5
Snap switch (250°F) DPDT BDP B8P B9P BNR BN8 BX8 BD7 BW7 BDQ B8Q B9Q BNY BN6 BX6 BD5 BW5
Series C – 230°C SPDT CAP C2P C3P CKR CK8 CU8 CK7 CU7 CAQ C2Q C3Q CKY CK6 CU6 CK5 CU5
Snap switch (450°F) DPDT CDP C8P C9P CNR CN8 CX8 CD7 CW7 CDQ C8Q C9Q CNY CN6 CX6 CD5 CW5
Series D – 120°C
Snap switch
(250°F)
SPDT – – – – – – – – DAQ D2Q D3Q DKY DK6 DU6 DK5 DU5
for DC
DPDT – – – – – – – – DDQ D8Q D9Q DNY DN6 DX6 DD5 DW5
current appl.
Series E – 230°C
Vibration
(450°F)
SPDT EAP E2P E3P EKR EK8 EU8 EK7 EU7 EAQ E2Q E3Q EKY EK6 EU6 EK5 EU5
resistant
DPDT EDP E8P E9P ENR EN8 EX8 ED7 EW7 EDQ E8Q E9Q ENY EN6 EX6 ED5 EW5
mercury switch
Series F – 230°C
Snap switch (450°F) SPDT FAP F2P F3P FKR FK8 FU8 FK7 FU7 FAQ F2Q F3Q FKY FK6 FU6 FK5 FU5
hermetically DPDT FDP F8P F9P FNR FN8 FX8 FD7 FW7 FDQ F8Q F9Q FNY FN6 FX6 FD5 FW5
sealed
Series HS – 230°C
Snap switch (450°F)
SPDT – – – – – – – – HM2 H7A H6A HS3 HB1 HB2 HB3 HB4
hermetically
sealed with
DPDT – – – – – – – – HM6 H7C H6C HS7 HB5 HB6 HB7 HB8
terminal block
Series U – 120°C SPDT UAP U2P U3P UKR UK8 UU8 UK7 UU7 UAQ U2Q U3Q UKY UK6 UU6 UK5 UU5
Snap switch (250°F) DPDT UDP U8P U9P UNR UN8 UX8 UD7 UW7 UDQ U8Q U9Q UNY UN6 UX6 UD5 UW5
Series W – 230°C
Snap switch
(450°F)
SPDT WAP W2P W3P WKR WK8 WU8 WK7 WU7 WAQ W2Q W3Q WKY WK6 WU6 WK5 WU5
hermetically
DPDT – – – – – – – – WDQ W8Q W9Q WNY WN6 WX6 WD5 WW5
sealed
Series X – 230°C
Snap switch
(450°F)
SPDT XAP X2P X3P XKR XK8 XU8 XK7 XU7 XAQ X2Q X3Q XKY XK6 XU6 XK5 XU5
hermetically
DPDT – – – – – – – – XDQ X8Q X9Q XNY XN6 XX6 XD5 XW5
sealed
Max.
process
temp.
°C (°F)
Cont.
one
per
encl.
MODEL IDENTIFICATION
A complete B73 switch, consists of 1 code:
MATERIALS OF CONSTRUCTION
1 Carbon steel cage with 316 SST float and 400 SST magnetic sleeve.
2 Carbon steel cage with 316 SST float, magnetic sleeve with 316 SST jacket.
4 316 SST cage and trim and float.
B 7 3
complete code for B73 liquid float level switch
Switch mechanism and enclosure, refer to table below for pneumatic switch mechanisms and for
electric switch mechanisms.
SIZE AND TYPE OF PROCESS CONNECTION
B 2 0 1" NPT threaded connection upper side/bottom
B 3 0 1" NPT socket weld connection upper side/bottom
➁ Housing heater and drain available in option. Consult factory for proper
model numbers.
③ Max. Process temperatures are based on 38°C (100°F) ambient tem-
perature.
SELECT PNEUMATIC SWITCH MECHANISM & ENCLOSURE
1" ANSI type NW 25 DIN FORM C (DIN 2526) ▼ FLANGE TYPE & SIZE
150 lbs 300 lbs ND 16 (DIN 2533) ND 25 (DIN 2534) ▼ MOUNTING STYLE
N30 N40 1FA 1GA flanged connection upper side/bottom
S30 S40 1FB 1GB flanged connection side/side
③
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