B4

0

H

6

MATERIALS OF CONSTRUCTION/PRESSURE RATING PSI (BAR)

M O D E L

N U M B E R

BASIC MODEL

B40-H

B40-H Liquid Level Switch for Temperatures Above +750° F (+399° C)

ΠFloat material based on availability. Both 321SS and 347SS

are stabilized austenitic stainless steels.

 Consult factory for TYPE 4X/7/9 cast iron housings.

Ž Aluminum enclosure limited to +750° F (+399° C) in

hazardous locations.

 Process temperature based on +100° F (+38° C) ambient.

 On steam applications, temperature down rated to +400° F

(+204° C) process at +100° F (+38° C) ambient.

Chamber Material

Float

Material

Tank

Connection

Minimum

S.G.

Temperature °F (°C)

750

800

1000

F30

P11/F11

Chrome-Moly

1" butt-weld

0.65

1552

(107)

1510

(104)

661

(46)

B60

1" socket weld

C40

A312/A479

T316/316L SS

3169

(218)

3129

(216)

3011

(208)

Switch

Description

Process

Temperature

Range



One Set

Point

CS/Aluminum

Cast Iron

TYPE 4X

Class

I

, Div 1,

Groups C & D

Class

I

, Div 1,

Group B

Series R

Snap Switch

-40° to +1000° F

(-40° to +538° C)

SPDT

R1M

RKM

RKW

DPDT

RDM

RNM

RNW

Series 9

Hermetically

Sealed Snap

Switch

-50° to +1000° F

(-46° to +538° C)

SPDT

9AM

9KM

9KW

DPDT

9DM

9NM

9NW

ELECTRIC SWITCH MECHANISM AND ENCLOSURE FOR MODEL B40-HXXX ONLY