Quick Links - Alpha Controls & Instrumentation Inc.

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Contact information
Address

361 Steelcase Road West
Unit 6
Markham, ON  L3R3V8 - Canada

Email

Phone

(905) 477-2133

Fax

(905) 477-4219

Pressure Switches

1000E Explosion-Proof Diaphragm Operated Pressure Switches
Dwyer

1000E Explosion-Proof Diaphragm Operated Pressure Switches

Rugged construction and explosion-proof design, high over-pressure protection and vibration resistance

Starting At
$658.00 CAD Configure
AP Diaphragm Operated Pressure Switches
Dwyer

AP Diaphragm Operated Pressure Switches

Visible set point and external adjustment, available in weatherproof and explosion-proof housing

Starting At
$425.00 CAD Configure
SA1100 Diaphragm Operated Pressure Switches
Dwyer

SA1100 Diaphragm Operated Pressure Switches

Weatherproof and explosion-proof, burst pressure protection to 3000 PSI, visible set-point and deadband adjustments

Starting At
$558.00 CAD Configure
1630 Large Diaphragm Pressure Switches
Dwyer

1630 Large Diaphragm Pressure Switches

Visual set point adjustment in 5 standard ranges (0.05 in W.C. - 12 in W.C.) with repetitive accuracy within 1%

Starting At
$431.00 CAD Configure
1900 Compact Low Differential Pressure Switches
Dwyer

1900 Compact Low Differential Pressure Switches

Advanced design, precision construction, compact size, and repeatability; with set points from 0.07 in W.C. to 20 in W.C.

Starting At
$65.00 CAD Configure
A2 Subminiature Pressure Switch
Dwyer

A2 Subminiature Pressure Switch

Equipped with high proof pressure capabilities, available with either spade terminals or flying leads

Call Today!
800-567-8686 ...or... Request Quote
DA/DS Bourdon Tube Pressure Switches
Dwyer

DA/DS Bourdon Tube Pressure Switches

Customers say the extremely high sensitivity and great repeatability make this the best pressure switch ever made

Call Today!
800-567-8686 ...or... Request Quote
CXA Water Pump Pressure Switch
Dwyer

CXA Water Pump Pressure Switch

Set point and deadband are easily adjustable, can be mounted in any orientation, simple & reliable

Starting At
$22.00 CAD Configure
MDA Miniature Adjustable Pressure Switch
Dwyer

MDA Miniature Adjustable Pressure Switch

Field adjustable set point, gold inlay contacts, small and lightweight for applications where space is constrained

Starting At
$41.00 CAD Configure
A1PS / A1VS Economical Pressure Switch
Dwyer

A1PS / A1VS Economical Pressure Switch

15 A SPDT switch for direct control of pumps and motors, pressure, vacuum, or compound ranges available

Starting At
$85.00 CAD Configure
PG Gas Pressure/Differential Pressure Switch
Dwyer

PG Gas Pressure/Differential Pressure Switch

1% of full scale repeatability, clear easy-to-read scale with convenient external setpoint adjustment

Starting At
$673.00 CAD Configure
A1F Low Cost OEM Pressure Switch
Dwyer

A1F Low Cost OEM Pressure Switch

Low cost and precision made of 316 SS and fluorocarbon ensure great chemical compatibility for a wide range of OEM industrial applications

Starting At
$113.00 CAD Configure
3000MR(S) Photohelic Switch/Gage
Dwyer

3000MR(S) Photohelic Switch/Gage

Highly repeatable differential pressure switch with a large easy-to-read analog pressure gage, easily adjustable switch setting,

Starting At
$549.00 CAD Configure
1000W Weatherproof Diaphragm Operated Pressure Switches
Dwyer

1000W Weatherproof Diaphragm Operated Pressure Switches

High over-pressure protection with a pressure range to 1400 PSI, visible setpoint, and fixed deadband

Starting At
$489.00 CAD Configure
BYDS Bypass Damper Switch
Dwyer

BYDS Bypass Damper Switch

Designed to control motorized bypass dampers, equipped with a solid-state switching and timing circuit, and relay contact

Starting At
$107.00 CAD Configure
MP Mini-Photohelic Differential Pressure Switch/Gage
Dwyer

MP Mini-Photohelic Differential Pressure Switch/Gage

Measures and controls positive, negative, or differential pressures of non-combustible and non-corrosive gases, and includes visible switch status LED

Starting At
$414.00 CAD Configure
DX Wet/Wet Differential Pressure Switch
Dwyer

DX Wet/Wet Differential Pressure Switch

High static pressure rating of 200 PSIG, low differential set points, NEMA 4X weatherproof enclosure

Starting At
$115.00 CAD Configure
CS & CD Diaphragm Pressure Switch
Dwyer

CS & CD Diaphragm Pressure Switch

Advanced design and precision construction, visible set point and easy to wire SPDT snap switch, vibration resistant

Starting At
$301.00 CAD Configure
1640 Floating Contact Null Switch for High and Low Actuation
Dwyer

1640 Floating Contact Null Switch for High and Low Actuation

Visual set point adjustment, adjustable null zone, and functions as a null switch

Starting At
$697.00 CAD Configure
43000 Capsu-Photohelic Pressure Switch/Gage
Dwyer

43000 Capsu-Photohelic Pressure Switch/Gage

Highly repeatable pressure switches combined with a precise pressure gage, encapsulated sensing element, easy to adjust set point indicators

Starting At
$1,377.00 CAD Configure
ADPS / EDPS Differential Pressure Switch
Dwyer

ADPS / EDPS Differential Pressure Switch

Designed for pressure, vacuum, and differential pressures, settings from 0.08 in W.C. - 20 in W.C., and dual scale field adjustable set point knob in a compact and low-cost instrument

Starting At
$30.00 CAD Configure
1800 Low Differential Pressure Switch for General Industrial Service
Dwyer

1800 Low Differential Pressure Switch for General Industrial Service

Small size and low price with 2% repeatability, wide range of models from 0.07 in W.C. - 85 in W.C.

Starting At
$98.00 CAD Configure
1620 Single and Dual Pressure Switch
Dwyer

1620 Single and Dual Pressure Switch

Diaphragm sealed leak proof construction provide high reliability repetitive accuracy within 1%

Starting At
$420.00 CAD Configure
H2 Dual-Action Explosion-proof Pressure Switches
Dwyer

H2 Dual-Action Explosion-proof Pressure Switches

Explosion proof and weatherproof housing, independant piston action design, mountable in any position

Starting At
$1,265.00 CAD Configure
A9 Snap-Action Pressure Switch
Dwyer

A9 Snap-Action Pressure Switch

High-quality miniature snap-action switches with a high current capacity and high temperature rating

Starting At
$38.00 CAD Configure
MDS Miniature Pressure Switch
Dwyer

MDS Miniature Pressure Switch

Designed with a double diaphragm, low cost with a minimum 20 million cycle life expectancy and an extremely fast response time

Starting At
$48.00 CAD Configure
APS / AVS Adjustable Pressure Switch
Dwyer

APS / AVS Adjustable Pressure Switch

Field adjustable with simple indicating pointer, vacuum and pressure ranges, stainless steel construction

Call Today!
800-567-8686 ...or... Request Quote
1950 / 1950G Explosion-Proof Differential Pressure Switch
Dwyer

1950 / 1950G Explosion-Proof Differential Pressure Switch

Integral explosion-proof and weatherproof housing, easily accessible electrical connection, light and compact

Starting At
$252.00 CAD Configure
MVS Miniature Vacuum Switch
Dwyer

MVS Miniature Vacuum Switch

Minimum life expectancy of 10 million cycles, extremely fast response time, adjustable set point

Starting At
$41.00 CAD Configure
In Stock* A4 Differential Pressure Switch
Dwyer

A4 Differential Pressure Switch

Offers field adjustments and can handle system pressures up to 6000 PSIG

Starting At
$274.00 CAD Configure
MHS Miniature High Sensitivity Pressure Switch
Dwyer

MHS Miniature High Sensitivity Pressure Switch

Wide range of field adjustable pressure set point options, easy to install and easy to adjust, life of over 10 million cycles

Starting At
$36.50 CAD Configure
EDA Electronic Pressure Controller
Dwyer

EDA Electronic Pressure Controller

2 switches, indicating gage and transmitter with two line display and external programming buttons

Starting At
$428.00 CAD Configure
EN Digital Pressure Gauge/Switch
Anderson-Negele

EN Digital Pressure Gauge/Switch

6 times more accurate than a mechanical gauge, 3 times the over-range capacity and 5-10 times the resolution of traditional mechanical pressure indicators

Call Today!
800-567-8686 ...or... Request Quote
A3000 Photohelic Pressure Switch/Gage
Dwyer

A3000 Photohelic Pressure Switch/Gage

Versatile, highly repeatable pressure switches, measures and controls positive, negative or differential pressures of air and compatible gases

Starting At
$552.00 CAD Configure
MDPC Mini Digital Pressure Controller
Dwyer

MDPC Mini Digital Pressure Controller

High measurement accuracy, high shock and vibration resistance, 6 user selectable pressure units

Starting At
$139.00 CAD Configure
1120 Series Differential Pressure Units
Meriam

1120 Series Differential Pressure Units

Proven and reliable sensing element available in ranges as low as 0 - 30 in w.c. or as high as 0 - 500 PSI

Starting At
$1,819.80 CAD Configure
* Indicates some SKUs available in stock for immediate delivery.
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