Dwyer F6 & F7 Series Vertical Level Switches Instructions

: October 27, 2023
: Dwyer

Table of Contents

Dwyer F6 & F7 Series Vertical Level Switches
MODELS
DIMENSION
BENEFITS/FEATURES
APPLICATIONS
References
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Dwyer F6 & F7 Series Vertical Level Switches

MODELS

DIMENSION

DIMENSIONS – IN (MM)

Model

| (A) Stem Length| (B) Float Diameter| (C) Float Height| (D) Actuation from Hex CD
F7-SB| 2.75 (70)| 1.38 (35)| 1.13 (29)| 1.2 (31)
F7-SS2| 2.06 (52)| 1.0 (25)| 1.0 (25)| 0.73 (19)
F6-SS| 2.17 (55)| 1.11 (28)| 1.11 (28)| –
F7-MPP| 1.63 (41)| 0.63 (16)| 0.63 (16)| 0.47 (12)
F7-PP| 2.18 (55)| 1.18 (30)| 1.0 (25)| 0.69 (18)
F7-BT| 2.18 (55)| 1.18 (30)| 1.0 (25)| 0.69 (18)
F7-PVC| 3.44 (87)| 1.5 (38)| 1.81 (46)| 0.75 (19)
F7-T1| 3.47 (88)| 2.13 (54)| 1.94 (49)| 0.92 (22)
F7-ST713| 3.38 (86)| 2.06 (52)| 2.06 (52)| 1.09 (28)
F7-ST714| 3.38 (86)| 2.06 (52)| 2.06 (52)| 1.09 (28)
CDDistance between hex and liquid (S.G. = 1.0) level at

actuation point will vary with specific gravity changes.

The Series F6 & F7 Vertical Level Switches are designed to be mounted at the maximum or minimum level point to provide level indication and control. Models are shipped with normally open switch contacts which close as the float rises toward the mounting threads.

BENEFITS/FEATURES

Simple installation with low cost and reliable design
Flexible application design with open or close circuits for rising or falling levels with vertical models that mount internally, oriented within 30° of vertical, or select optional fittings for external mounting
Long product life from hermetically sealed reed switches that are actuated by magnets permanently bonded inside the float arm
Switch ratings are suitable for many solid state control systems and monitors or alarms
Variety of application use with high current, simple relay interfaces

MODEL CHART

Model

|

Applications

Wire Leads

| Mtg NPT (M)| Weight oz (g)
F7-SB| General purpose| Buna-N and epoxy/316 SS| 220°F (105°C)| 150 psig (10 bar)| 0.60| 25 VA: 1 A| 22 AWG 18˝ (45 cm)| 1/8˝| 2 (58)
| | | | | | @ 220 VAC| | |
F7-SS2| High temp/pressure,| 316 SS (CYC)/316 SS| 300°F (149°C)| 450 psig (31 bar)| 0.75| 25 VA: 1 A| 22 AWG 18˝ (45 cm)| 1/8˝| 1.2 (34)
| corrosives| | | | | @ 200 VAC| | |
F6-SS| Corrosives| 316 SS/316 SS| 257°F (125°C)| 218 psig (15 bar)| 0.65| 20 VA: 0.08 A| 20 AWG 11.8˝ (30 cm)| 1/8˝| 1.59 (45)
| | | | | | @ 240 VAC| | |
F7-MPP| Broad chemical| Polypropylene/| 180°F (82°C)| 100 psig (6.89 bar)| 0.90| 10 VA: 0.1 A| 22 AWG 24˝ (61 cm)| 1/8˝| 0.8 (23)
| compatibility| polypropylene| | | | @ 100 VAC| | |
F7-MPP-NO| Broad chemical| Polypropylene/| 176°F (80°C)| 100 psig (6.89 bar)| 0.90| 50 VA: 0.2 A| 22 AWG 24˝ (61 cm)| 1/8˝| 0.8 (23)
| compatibility| polypropylene| | | | @ 240 VAC| | |
F7-PP| Broad chemical| Polypropylene and epoxy/| 220°F (105°C)| 100 psig (6.89 bar)| 0.60| 30 VA: 0.14 A| 22 AWG 24˝ (61 cm)| 1/8˝| 0.8 (23)
| compatibility| polypropylene| | | | @ 220 VAC| | |
F7-BT| Oils and fuels| Buna-N and epoxy/PBT| 220°F (105°C)| 150 psig (10 bar)| 0.45| 30 VA: 0.14 A| 22 AWG 24˝ (61 cm)| 1/8˝| 0.7 (20)
| | | | | | @ 220 VAC| | |
F7-PVC| Chemical and plating| CPVC/CPVC| 180°F (82°C)| 15 psig (1 bar)| 0.85| 20 VA: 0.08 A| 22 AWG 24˝ (61 cm)| 1/4˝| 5 (140)
| | | | | | @ 240 VAC| | |
F7-T1| Viscous, sticky or corrosive| PTFE/TFE| 300°F (149°C)| 30 psig (2 bar)| 0.80| 20 VA: 0.08 A| 22 AWG 24˝ (61 cm)| 1/4˝| 6 (170)
| liquids| | | | | @ 240 VAC| | |
F7-ST713| Oils, water and chemicals| 316 SS/316 SS| 300°F (149°C)| 750 psig (52 bar)| 0.80| 20 VA: 0.08 A| 22 AWG 24˝ (61 cm)| 1/4˝| 6 (170)
| | | | | | @ 240 VAC| | |
UL listed. F7-MPP is normally closed/F7-MPP-NO is normally open. *PBT-Polybutylene terephthalate.
ACCESSORIES – FOR EXTERNAL MOUNTING OF VERTICAL MODELS**

Model| Description
A- 347| 1/8˝ x 1-1/4˝ NPT carbon steel adaptor
A-347- SS| 1/8˝ x 1-1/4˝ NPT 316 SS adaptor
A- 348| 1/8˝ x 1-1/2˝ NPT carbon steel adaptor