Call us anytime at
888-884-0911
Mon-Fri 8-5 EST
|
support@mrsupply.com
Sign in
or
Register
|
help
Special Offers
Shopping Cart
Input Quote Code
Quick Order
Contact Us
All Categories
All Categories
Electric
Lutron
Dimmers
LED/CFL Dimmer
Switches
Caseta
Sunnata (14)
Wall Plates
Fan Controls
Receptacles & GFI
Tamper Resistance (3)
Jack and Port Frames
Dual Controls
Grafik T (9)
Pico Wireless Remotes (105)
Interface and More (14)
Motion Sensors
Room Controls (1)
Vive Wireless (19)
Accessories and Cables (40)
Power Distribution
Circuit Breakers
Disconnect Switches
Fuses
Metering
WireWay
Load Centers
Starter (6)
Solar System
Solar Battery (5)
Boxes, Covers, Conduit & Fittings
Fan and Fixture Box (6)
Floor Box cover (1)
Weatherproof Pull Boxes (11)
Door Locking Products (4)
Outdoor Boxes (38)
Plastic Boxes and Covers (49)
Screw Cover Pull Boxes (32)
Steel Boxes and Covers (91)
Gang Boxes (67)
Square Covers (33)
Raised Covers (79)
Rised Gang Box Partition (6)
Recessed Floor Box
Ballasts
Fluorescent (1)
Electronic Ballast (11)
Electronic Dimming Ballast
Magnetic Ballast (7)
HID
High Pressure Sodium Ballast (1)
Metal Halide Ballast (9)
Emergency Ballast (3)
Clips, Clamps, Hangers
Conduit/Cable (44)
Beam/Purlin (20)
Hangers/Hanging Systems (10)
Stud Wall/Dry Wall (15)
Datacomm ITS (14)
Acoustical (20)
Ceiling/Partitions (2)
Rooftop Support (4)
Miscellaneous Components (3)
Contactors
Lighting Contactors (1)
Definite Purpose Contactors (5)
Electrical Fitting
Strut Fitting (20)
Rigid-IMC Fittings
EMT Fittings
PVC Fittings
Conduit Bodies
Hanging & Supports (15)
Grounding (25)
Liquid Tight Conduit (16)
Service Entrance Fittings (19)
Miscellaneous Fittings (36)
Accessories (12)
Liquid Tight Flexible Cable Connectors (19)
Strain Relief Cord Connectors (23)
Flex Conduit and AC/NM Cable Fittings
Heating Systems
Floor Heating
Unit Heaters (6)
Ceiling Heaters (5)
Speciality Heaters (3)
Baseboard Heaters (16)
Wall Heaters (12)
Pipe Heating Cable (8)
Accessories (24)
Wire Connectors & Wire Terminals
Compression Lug (70)
Grounding Lug (5)
Insulation Piercing Connector (10)
Mechanical Lug (60)
Split Bolt Connector (16)
Insulated Mechanical Connector (49)
Leviton Controls
Dimmers (1)
Switches (2)
Controller (2)
Power Extender (2)
Humidity Sensor
Home Automation (7)
Sensors (4)
Integrated Room Control (IRC) (7)
Media Components
Lighting
Fireproofing (2)
Exit Lights (21)
Light Bulbs (20)
Occupancy Sensors (1)
ALP Lighting (1)
Aladdin Light Lift (1)
AtLite
Astralite
Cooper Lighting (18)
Cooper Controls (4)
Elco Lighting (86)
Encore Lighting
Hubbell Lighting
Juno Lighting (3)
Jesco Lighting
Lightolier (54)
WAC Lighting (61)
Progress Lighting
Halo Lighting (21)
RAB Lighting (12)
Topaz (4)
USAI Lighting (1)
Nora Lighting (89)
Contrast Lighting
Satco (2)
Eurofase (3)
LED Lighting
LED DC Transformer Drivers (5)
LED Down Lights
LED Highbays (8)
LED Landscape (8)
LED Panels (7)
LED Track Head (4)
LED Under Cabinet Lights (19)
LED Vaporproof (3)
LED Wall Packs (7)
LED Puck Lights
LED Strips
LED Accessories (3)
LED Bulbs
LED Bulbs on Sale (19)
LED A-19
LED Flood Light Bulbs (1)
LED MR Bulbs
LED MR16 (13)
LED Tubes
Security, Audio, Paging System
Intercoms
Bogen (17)
Smart Home Devices
Smoke Detectors
Carbon Monoxide (4)
Smoke/Carbon Combo (1)
Heat Alarm (2)
Relay (3)
Smoke Detector (2)
Thermostats
Honeywell
PRO1IAQ (3)
Accessories (2)
EASYHEAT
BERKO (5)
Tools
Diablo Tools
Thermadyne
LENOX
3M Products (20)
GREENLEE (5)
RIDGID
Wire Connectors
SEEKONK
KLEIN TOOLS (97)
IDEAL (27)
CHANNELLOCK (16)
Powers Fasteners (27)
Test equipment (27)
ITM Tools (10)
IVY Classic
Hand Dryer
General Products (25)
Transformers
Electronic Transformers
Magnetic Transformers (26)
Ventilation Fans
Fan (3)
Fan & Light
Fan & Heat
Voice and Data
Cable Systems
Cables
Wall Plates
Jumbo Metal Plates (61)
Jumbo Plastic Plates (27)
Lexan Plastic Plates (99)
Metal Plates (263)
Outdoor Plates (6)
Plastic Plates (186)
Screwless Snap On (10)
Wire/Cable
BX Cable (7)
Communication Cable (11)
Control Cable (27)
Conduit, Duct, & Raceway
Non-Metallic Surface Raceway
Steel Surface Raceway
Aluminum Surface Raceway System
Surface Poke-Thru Device (29)
Accessories (24)
Overfloor Raceway System
Plugmold, Multi-Outlet Systems
Hubbell PlugTrack (3)
Recessed Floor Box
Wiring Devices
Switch
Receptacle
USB Receptacles (21)
Combination Device
Straight Blade Device
Locking Device
Lampholder (10)
Accessories (7)
Motion Sensor (1)
Timers
Plumbing
American Standard
Bathroom Accessories
Bathroom Sinks
Bathtubs
Commercial Faucets
Flush Valves
Kitchen Faucets
Showers
Toilet Seats
Toilets
Tub Filler
Urinals
Bathroom Faucets
Bar and Laundry Faucets
Bathroom and Kitchen
Kohler (16)
Danze
Symmons
Sloan
ELKAY
Flush Tank
Drains (2)
Gerber
Sinks
Central Brass (12)
Flush Valves
T&S
Boiler and Liquid Controls
Watts
McDonnell & Miller
Bell & Gossett
Wilkins
Taco
Danfoss
Spirotherm
OnSite PRO (13)
Flexcon
Brass & Tubular & Strainer
Strainer (12)
Traps (16)
Waste Bends (11)
Quick Hook Up (6)
Tailpieces (9)
Tubes (5)
Offsets (3)
Extensions (5)
Elbows (5)
Tubular Fitting (7)
Nuts & Washers (15)
Fire Suppression Products
Sprinklers (14)
Sprinkler Components (6)
Flow Switch (6)
Drains
Floor Drains (23)
Floor Sinks (11)
P-Trap (2)
Plastic Sleeve (9)
Roof Drains (9)
Shower Drains (17)
Trap Primers (7)
Plumbing Escutcheon
Plumbing Fitting
Dresser Couplings
Grooved Fittings
SharkBite (3)
Cast & Mallable Iron
PVC Fittings
Galvanized Fittings
Copper Fittings
Copper Press Fittings
Copper DWV (17)
Nipples (Import)
PEX Products
Compression Fittings
Chrome Fittings (15)
Flare Fittings
Bronze TP Adapters (23)
No Hub Couplings
Plumbing Hanger
Plumbing Heating
Thermocouple (5)
Air Valve (Vent)
Baseboard Heaters
Water Heaters (5)
Thermostats (4)
Accessories
Heater Elements (7)
Venting (33)
Zone Valve (3)
Aquastat (10)
Plumbing Meters
Water Meters
Gas Meters
Plumbing Valves
Ball Valves (71)
Water Valves
Gas Ball Valves (9)
Gate Valves
Globe Valves
Check Valves
Boiler Drains (2)
Float Valves (1)
Hose Bibbs (12)
Hydrant Valves
Sillcocks (12)
Strainers (29)
Stop Valves
Stop & Waste Valves (1)
Radiator/Heating Valves (21)
Circulator/Balancing Valves (7)
Aircocks
Needle Valves (1)
Accessories (8)
Plumbing Pumps
Taco
Bell & Gossett
Liberty Pumps
LittleGIANT
Argo
Flex Weld
Flex Hose (1)
General Plumbing Products
Chemicals
Flexible Fittings (21)
Grab Bars (6)
Insulations
Pipe Repair Clamp (22)
Toilet Flanges & Gaskets (29)
Washing Machine/ Ice Maker Boxes (7)
Water Connectors
Accessories (21)
Gauge (39)
Drain Cleaners
Lead Products (25)
Gas Connectors
Grease Trap
Water Filter Systems
American Plumber
Aqua Pure(CUNO, 3M)
ELKAY
Pentek
Filter Systems (1)
advanced search
This site requires JavaScript to function properly.
Please enable JavaScript in your web browser.
Cart is empty
Your Quotes
Enter Quote Code
Request a Quote
Trustpilot
Boiler and Liquid Controls
McDonnell & Miller
Flow Switches
Flow Switches
General Purpose Liquid Flow Switches, 120611 (Replacement FS4-3)
Mfr.
Part#
SKU
Color
1+
$208.05
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Add to cart
Add to wish list
4
In Stock
Ships in 1-2 Day
