Install Instructions

ManualsBrandsDwyer ManualsFlow Switches2" NPT Flotect Explosion-Proof Mini-Size Brass SPDT Flow Switch, w/out Tee

V6 With Tee

Cold Water - Factory Installed Tee

Approximate actuation/deactuation low Rates

GPM upper, M

/HR lower

Air-Factory Installed Tee

Approximate actuation/deactuation flow rates

SCFM upper, NM

/M lower

V6 Low Flow, Field Adjustable

Cold Water - Low Flow Models

Approximate actuation/deactuation flow rates

GPM upper, M

/HR lower

Air - Low Flow Models

Approximate actuation/deactuation flow rates

SCFM upper, NM

/M lower

1/2˝ NPT

1.5 1.0

0.34 0.23

3/4˝ NPT

2.0 1.25

0.45 0.28

1˝ NPT

3.0 1.75

0.68 0.40

1-1/4˝ NPT

4.0 3.0

0.91 0.68

1-1/2˝ NPT

6.0 5.0

1.36 1.14

2˝ NPT

10.0 8.5

2.27 1.93

1/2˝ NPT

6.5 5.0

.18 .14

3/4˝ NPT

10.0 8.0

.28 .23

1˝ NPT

14 12

.40 .34

1-1/4˝ NPT

21 18

.59 .51

1-1/2˝ NPT

33 30

.93 .85

2˝ NPT

43 36

1.19 1.02

Minimum

.04 .03

.009 .007

Maximum

.75 0.60

0.17 0.14

Minimum

.18 .15

.005 .004

Maximum

2.70 2.0

.08 .06

Example

Series

Construction

Body

Switch Type

Tee Connection

Size

Tee Type and

Material

Options

LFE

022A

BUSH2

BUSH3

BUSH4

BUSH5

BUSH6

BUSH7

BUSH8

BUSH9

BUSH10

BUSH11

CSA

FTR

IEC

JCTLH

ORFB

ORFS

TBC

VIT

Series V6EPB-B-D-1-B-AT Flotect

Mini-Size Flow Switch, brass body, DPDT, 1/2"

brass tee, with ATEX approval.

Flotect

Mini-Size Flow Switch

Explosion Proof

Brass

Stainless Steel

DPDT

SPDT

1/2" NPT

3/4" NPT

1" NPT

1-1/4" NPT

1-1/2" NPT

2" NPT

Low Flow with 1/2" NPT Inlet and Outlet

1/2" BSPT ++

3/4" BSPT ++

1" BSPT ++

1-1/4" BSPT ++

1-1/2" BSPT ++

2" BSPT ++

Low Flow with 1/2" BSPT Inlet and Outlet ++

Brass

Stainless Steel

NO Tee with Field Trimmable Vane

0.018 Spring for Low Flow

.020 Spring for Low Flow

.022 Spring for Low Flow

.022 Spring for Low Flow with Alnico Magnet

.031 Spring for Low Flow

ATEX Approval

1/2" NPT x 3/4" NPT Bushing

1/2" NPT x 1" NPT Bushing

1/2" NPT x 1-1/4" NPT Bushing

1/2" NPT x 1-1/2" NPT Bushing

1/2" NPT x 2" NPT Bushing

1/2" BSPT x 3/4" BSPT Bushing, M25 X 1.5 Conduit Connection ++

1/2" BSPT x 1" BSPT Bushing, M25 X 1.5 Conduit Connection ++

1/2" BSPT x 1-1/4" BSPT Bushing, M25 X 1.5 Conduit Connection ++

1/2" BSPT x 1-1/2" BSPT Bushing, M25 X 1.5 Conduit Connection ++

1/2" BSPT x 2" BSPT Bushing, M25 X 1.5 Conduit Connection ++

CSA*

Custom Vane

Flow Test Report

Ground Lead*

Custom Nameplate

IECEx Approval

Junction Box with Left Side Conduit

Korean Certified*

High Temperature*

Gold Contacts

No Nameplate*

Brass Orifice

Stainless Steel Orifice

Paper Tag

Reinforced Vane

Stainless Steel Tag

Terminal Block Connector*

Flouroelstomer Seals

EU-Type Certificate, IECEx and KC Installation Instructions:

Cable Connection

The cable entry device shall be certified in type of explosion protection flameproof

enclosure “d”, suitable for conditions of use and correctly installed. For Ta ≥ 65°C

cable and cable gland rated ≥ 90°C shall be used.

Conduit Connection

An Ex d certified sealing device such as a conduit seal with setting compound shall

be provided immediately to the entrance of the valve housing. For Ta ≥ 65°C wiring

and setting compound, in the conduit seal, rated ≥ 90°C shall be used.

Note: ATEX, IECEx and KC units only: The temperature class is determined by the

maximum ambient and or process temperature. Units are intended to be used in

ambient of -20°C≤ Tamb ≤75°C. Units may be used in process temperatures up to

105°C providing the enclosure and switch body temperature do not exceed 75°C.

The standard Temperature Class is T6 Process Temp ≤75°C. Alternate

Temperature Class of T5 Process Temp ≤90°C and 115°C (T4) Process Temp

≤105°C are available consult factory.

Refer to Certificate No: IECEx DEK 11.0039 for conditions of safe use for IECEx

compliant units.

All wiring, conduit and enclosures must meet applicable codes for hazardous

areas. Conduits and enclosures must be properly sealed. For outdoor or other

locations where temperatures vary widely, precautions should be taken to prevent

condensation inside switch or enclosure. Electrical components must be kept dry

at all times.

CAUTION: To prevent ignition of hazardous atmospheres, disconnect the device

from the supply circuit before opening. Keep assembly tightly closed when in use.

MAINTENANCE

Inspect and clean wetted parts at regular intervals. The cover should be in place

at all times to protect, the internal components from dirt, dust and weather and to

maintain hazardous location ratings. Disconnect device from the supply circuit

before opening to prevent ignition of hazardous atmosphere. Repairs to be con-

ducted by Dwyer Instruments, Inc. Units in need of repair should be returned to the

factory prepaid.

Attention: Units

without the “AT” suffix

are not Directive

2014/34/EU (ATEX)

compliant. These

units are not intend-

ed for use in poten-

tially hazardous

atmospheres in the

EU. These units may

be CE marked for

other Directives of

the EU.

*O p tions that do no have ATEX or IECEx

++ BSPT options not com patible with KC option