Series-V6

Supported Applications

The Dwyer Series V6 Flotect® Flow Switch is a compact, magnetically actuated flow switch designed to monitor air, water, or other compatible gases and liquids. The series provides three primary configurations: factory-installed in a tee, with a trimmable vane for field adjustment suitable for installation in an appropriate tee, and low-flow models featuring an integral tee and adjustable valve.

These switches are engineered for use in pipelines ranging from 1/2" to 2". Models are available with weatherproof or explosion-proof enclosures listed by UL and CSA for Class I, Groups A, B, C and D; and Class II, Groups E, F, and G (Group A on stainless steel body models only). Specific hazardous location approvals include Directive 2014/34/EU (ATEX) compliant construction with CE marking "CE 2813 II 2 G Ex db IIC T6 Gb Process Temps 75°C" or alternate temperature classes, and IECEx certification for "Ex db IIC T6 Gb Process Temp ≤ 75°C." Korean Certified (KC) options are also available.

Operating Conditions & Performance

The Series V6 operates within an ambient temperature range of -4 to 167°F (-20 to 75°C). Standard process temperatures span from -4 to 220°F (-20 to 105°C), with a high-temperature option (MT) rated up to 400°F (205°C); note that the MT option is not UL, CSA, ATEX, IECEx, or KC certified. Pressure ratings vary by construction: brass lower body models without a tee are rated for 1000 psig (69 bar), while 303 SS lower bodies reach 2000 psig (138 bar). Tee configurations include brass tees at 250 psi (17.2 bar), iron tees at 1000 psi (69 bar), and forged or stainless steel tees at 2000 psi (138 bar); low-flow models are rated for 1450 psi (100 bar).

Flow detection ranges depend on the configuration, pipe size, and media. For factory-installed tee configurations with cold water, actuation rates range from 1.5 GPM at 1/2" NPT to 10.0 GPM at 2" NPT. Air flow actuation for these models spans from 6.5 SCFM (at 1/2" NPT) up to 43 SCFM (at 2" NPT). Low-flow, field-adjustable models cover a range of .04 to .75 GPM for water and .18 to 2.70 SCFM for air in 1/2" pipe.

Configuration Options

The series offers extensive configurability across body materials, switch types, connection sizes, and hazardous location approvals.

• Housing & Wetted Materials: Bodies are available in Brass or 303 SS. Standard wetted parts include a 301 SS vane, ceramic magnet, and other components of 301/302 SS. Tees can be brass, iron, forged steel, or 304 SS.
• Switch Output: SPDT snap switch is standard; DPDT snap switch is optional. Electrical ratings for UL models are 5 A @ 125/250 VAC. CSA, ATEX, and IECEx models support 5 A @ 125/250 VAC (V~) or 5 A resistive / 3 A inductive @ 30 VDC.
• Process Connections: Models without a tee feature 1/2" male NPT. Factory-installed tees are available for pipe sizes from 1/2" to 2" (NPT). BSPT options with M25 x 1.5 conduit connections or junction boxes are offered.
• Enclosure Options: Weatherproof and explosion-proof enclosures are standard on EP models. Optional terminal blocks replace the 18 AWG, 18" (460 mm) lead wire for ATEX/CSA/IECEx configurations.

Additional options include custom vanes, reinforced vanes, gold contacts (MV option), fluoroelastomer seals (VIT option), and various bushings to adapt connection sizes. High-temperature service is available via the MT option code.

Key Product Differences

The Series V6 distinguishes itself through three distinct mechanical configurations:

• V6 With Tee (Factory Installed): The switch comes pre-installed in a tee of specified material and size. This configuration provides fixed actuation points based on the pipe diameter.
• V6 Field Trimmable Vane: These models are supplied without a factory-installed tee, featuring a vane that can be trimmed to fit specific flow requirements when installed in a suitable field-provided tee (brass/cast iron reducing or stainless/forged steel straight).
• V6 Low Flow Models: Designed for lower volume applications with an integral 1/2" NPT inlet and outlet. These units feature an adjustable valve to set the actuation point within a defined range.

Hazardous location variants are identified by specific suffixes: "AT" denotes ATEX compliant construction, while IECEx certified models carry the appropriate certification code. Units without these suffixes are not intended for use in potentially hazardous atmospheres under EU Directives. The BSPT connection options are noted as incompatible with the KC (Korean Certified) option.