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PRESSURE SWITCHESLOW DIFFERENTIAL PRESSURE

1950G1640 1800 1950 PG

D AP

PRESSURE SWITCHESSINGLE PRESSURE

SA1100 1000 C ES

1630 1900

ELECTRONIC SINGLE PRESSURE

Series Set Point Range

ServiceWetted Materials

Temperature Limit

Pressure Limit

Power RequirementRepeatabilityAdjustable DeadbandSet Point IndicationEnclosure RatingSwitch TypeMultiple StagesProcess ConnectionAgency Approvals

MDS MDA H3 DPA

A1PS APS MVS A2

MINIATURE SINGLE PRESSURE

MINIATURE DIFFERENTIAL PRESSURE

*Other Options Available Contact Factory

1950P A4

HIGH DIFFERENTIAL PRESSURE

Series Set Point Range

Service

Wetted Materials

Temperature Limit

Pressure LimitPower RequirementRepeatabilityAdjustable DeadbandSet Point IndicationEnclosure RatingSwitch TypeMultiple StagesProcess Connection

Agency Approvals

Any differential pressure switch can be used as a single pressure switch with proper venting.

Kapton®, Viton® , and Teflon® are registered trademarks of E.I. du Pont de Nemours and Company.www.dwyer-inst.com www.dwyer-inst.com

.15 to 24˝ w.c.(.04 to 6 kPa)

Compatible GasesConsult Factory

-30 to 130°F(-34 to 54°C)

50˝ w.c. (12.41 kPa)

None1%NoNo

GP, WP, or EXPTwo SPDT

Yes1/8˝ NPT

.07 to 20˝ w.c.(.017 to 5 kPa)


0 to 140°F(-18 to 60°C)

45˝ w.c. (11.2 kPa)

24 VDC, 120 or 240 VACConsult Factory

NoNo

WP and EXPSPDT

No1/8˝ NPT

.01 to 12˝ w.c.(.003 to 3 kPa)


-30 to 110°F(-34 to 43°C)

10 psig (69 kPa)

NoneConsult Factory

NoYes

GP, WP, or EXPSPDTYes

1/8˝ NPT

0.07 to 85˝ w.c.(0.017 to 21 kPa)Compatible GasesConsult Factory

-30 to 180°F(-34 to 82°C)

10 psig (69 kPa)

None2%NoNo

GP, WP, or EXPSPDT

No1/8˝ NPT

.03 to 20˝ w.c.(.007 to 5 kPa)


-40 to 140°F(-40 to 60°C)

45˝ w.c. (11.2 kPa)

NoneConsult Factory

NoNo

WP and EXPSPDT

No1/8˝ NPT

.05 to 12˝ w.c.(.012 to 3 kPa)


-30 to 110°F (-34 to 43°C)

10 psig (69 kPa)

None1%NoYes

GP, WP, or EXPSPDT

No1/8˝ NPT

0.07 to 20˝ w.c.(0.017 to 5 kPa)


-30 to 180°F(-34 to 82°C)

45˝ w.c. (11.2 kPa)

None3%NoNo

GP, WP, or EXPSPDT

No1/8˝ NPT

1˝ w.c. to 5 psig(.25 kPa to 3.4 bar)Compatible Gases

Fairprene, Brass, Steel,and Aluminum-10 to 180°F(-23 to 82°C)

Consult Factory

None1%No Yes

GP, WP, or EXPSPDT or DPDT

No1/8˝ and 1/2˝ NPT

.5 to 50˝ w.c.(.12 to 12.5 kPa)

Air or compatible fluids on “high side”Polycarbonate and

Polyurethane40 to 150°F(4 to 66°C)

Up to 15 psig(1 bar)None

Consult FactoryNoNo GP

SPST NONo

Hose Barb for 1/8-3/16 I.D. Tubing

.1 to 100˝ w.c.(0.25 to 249.1 mbar)

Air or compatible fluids on “high side”Polycarbonate and

Polyurethane40 to 150°F (4 to 66°C)

Up to 15 psig(1 bar)None

Consult FactoryNoNoGP

SPST NONo

Smooth Port for 1/8˝ I.D.Tubing

10˝ w.c. to 200 psid(2.5 kPa to 13.8 bar)

Compatible Liquids or GasesAluminum, Brass, or 316 SS

with Nitrile or Viton®

-4 to 220°F (-20 to 104°C)

1500 psig (103 bar)

NoneConsult Factory

NoNo

WP and EXPSPDT or DPDT

No1/8˝ NPT

0 to 80 psid (0 to 5.5 bar)

Compatible Liquids or GasesBrass or 316 SS

-10 to 180°F(-23 to 82°C)

Up to 80 psid (5.5 bar)600 psig (41 bar)

NoneConsult Factory

YesYes


Yes1/8˝ NPT

.5 to 50 psid(.03 to 3.5 bar)


-40 to 140°F(-40 to 60°C)Up to 90 psig

(6.2 bar)None

Consult FactoryNoNo

WP and EXPSPDT

No1/8˝ NPT

2 to 250 psid(.14 to 17.2 bar)

Compatible GasesAluminum and Steel

-65 to 225°F (-54 to 107°C)

2000 psid (138 bar)6000 psig (413 bar)

NoneConsult Factory

NoNoGP

SPDTNo

1/4˝ NPT

30˝ Hg Vacuum to 8000psig (762 mm Hg

Vacuum to 551 bar)Compatible Liquids

or GasesBrass, 403 SS

or 316 SS

-10 to 180°F(-23 to 82°C)

Up to 8000 psig (551 bar)None1%YesYes


Yes1/4˝ NPT

10˝ w.c. Vacuum to 125 psig

(2.5 kPa Vacuum to 8.6 bar)Compatible Liquids

or GasesSteel and Buna-N

or 316 SSand Teflon®

-30 to 150°F (-35 to 66°C)

Up to 160 psig (11 bar)None

Consult FactoryNoYes


No1/4˝ NPT

10 to 500 psig(0.7 to 34 bar)

Compatible Liquidsor Gases

Aluminum, Brass, or 316 SS with Buna-N

or Fluorocarbon-30 to 180°F (-35 to 82°C)

1200 psig (82 bar)None

Consult FactoryYesYes

WP and EXPSPDT or DPDT

No1/4˝ or 1/2˝ NPT

5 to 1400 psig(.48 to 96.5 bar)

Compatible Liquids or Gases

Aluminum or 316 SS with Polyamide,

316 SS, or Teflon®

-30 to 170°F (-35 to 77°C)



WP or EXPSPDT or DPDT

No1/4˝ NPT

30˝ Hg Vacuum to 150 psig (762 mm Hg Vacuum to 10.3 bar)Compatible Liquids

or GasesSteel and Buna-N

-30 to 150°F (-35 to 66°C)

Up to 175 psig (12.1 bar)None

Consult FactoryYesYesGP

SPDTNo

1/4˝ NPT

3 to 3000 psig (.21 to 206 bar)


17-4 PH SS and 316 SS

-20 to 160°F (-29 to 71°C)

Up to 4500 psig (310 bar)110 VAC0.50%

YesYesWP

SPDTNo

1/4˝ NPT

28˝ Hg Vacuum to 500 psig (711 mm Hg Vacuum to 34.5 bar)Compatible Liquids

or GasesZinc and Buna-N

-31 to 185°F (-35 to 85°C)


Consult FactoryNoYesGP

SPDTNo

1/4˝ NPT

28˝ Hg Vacuum to 500 psig(711 mm Hg Vacuum to

34.5 bar)Compatible Liquids

or Gases17-4 PH SS and

303 SS

-65 to 225°F (-54 to 107°C)

Up to 750 psig (51 bar)None

Consult FactoryNoYesGP

SPDTNo

1/8˝ NPT

3 to 330˝ w.c. Vacuum(8 to 822 mbar Vacuum)


Polycarbonate and Polyurethane

40 to 150°F(4 to 66°C)

Up to 330˝ w.c. (822 mbar)None20%NoNoGP

SPDTNo

Consult Factory

2 to 150 psig (.14 to 10 bar)


Kapton® and Brass

-40 to 250°F (-40 to 121°C)

500 psig (34 bar)None5%NoNo

GP or SubmersibleSPST

No1/8˝ NPT

1620 ADPS PDPS0.08 to 16˝ w.c.(20 to 4000 Pa)

Compatible GasesSilicone, PA 6.6 and

Polystyrene-4 to 185°F

(-20 to 85°C)40˝ w.c.(10 kPa)

NoneConsult Factory

NoYesGP

SPDTNo

5/16˝ OD and 1/4˝ ID

0.07 to 1.0˝ w.c.(17.4 to 248.8 Pa)Compatible Gases

Polyphenylene oxidestyrene,fluorosilicone and SS

-40 to 185°F(-40 to 85°C)

1.0 psig(0.069 bar)

None±0.02˝ w.c.

NoNoGP

SPST NO or NCNo

1/4˝ and 3/8˝ Hose Barb® ® ® ® ® ® ® ® ®

CX25 to 175 psig

(1.7 to 3.8 bar)

Compatible Gases

NBR with steel or aluminum

140°F (60°C)


±5 psig (0.3 bar)YesNoGP

Two SPST NCNo

1/4˝ NPT

CXA15 to 150 psig

(1.0 to 10.3 bar)


Silicone, steel and SS

140°F (60°C)


±5 psig (0.3 bar)YesNoGP

SPST NO or NCNo

1/4˝ NPT

A1F2 to 450 psig

(0.14 to 31.0 bar)

CompatibleLiquids or GasesFluorocarbon and

316 SS

-40 to 175°F (-40 to 80°C)



GP or WPSPDT

No1/4˝ and 1/2˝ NPT

A7

0.25 to 15 psig(0.017 to 1.0 bar)


Silicone and nylon

14 to 185°F (-10 to 85°C)

50 psig (3.5 bar)None±10%

NoNoGP

SPDT or SPSTNo

1/8˝ NPT, 1/4˝ NPT or4 mm OD

A9

2.9 to 130.5 psig(0.2 to 9.0 bar)


Copper with silicone orSS

Up to 257°F (125°C)

Up to 145 psig (10.0 bar)None±10%

NoNoGP

SPDTNo

1/8˝ NPT

A60.5 to 150 psig

(0.03 to 10.3 bar)


Polyimide with Brass or304 SS

-40 to 248°F (-40 to 120°C)

Up to 500 psig (34 bar)None±10%

NoNo

GP or WPSPDT

No1/4˝ NPT

® ® ® ®

PressureSwitch SG:dom/intl pressure switch 2/14/11 9:59 AM

Address:Dwyer Instruments, Inc.102 Indiana Highway 212P.O. Box 373Michigan City, IN 46361 U.S.A.

e-mail:General: [email protected]: [email protected]: [email protected]: [email protected]

Telephone:(800) 872-9141(219) 879-8000

website:www.dwyer-inst.comwww.love-controls.comwww.mercoid.comwww.proximitycontrols.com

Fax:(219) 872-9057

DWYER INSTRUMENTS, INC.P.O. Box 373Michigan City, IN 46361-9986

Return Service Requested

DWYER INSTRUMENTS, INC.P.O. Box 373Michigan City, IN 46361Phone: 219/879-8000Fax: 219/872-9057

Internet: http://www.dwyer-inst.comhttp://www.love-controls.com

e-mail: [email protected]

Dwyer Instruments LtdUnit 16, The Wye Estate, London RoadHigh Wycombe, Bucks HP11 1LH United KingdomPhone: (+44) (0)1494-461707Fax: (+44) (0)1494-465102

Houston Office:Phone: 281/446-1146Fax: 281/446-0696

Dwyer Instruments, Pty. Ltd.Unit 1, 11 Waverley DriveUnanderra, NSW 2526 AustraliaPhone: 61 2 4272-2055Fax: 61 2 4272-4055

Just circle any cover(s) above, photocopy this entire page (complete with your name and mailing address) and FAX it to (219) 872-9057 or e-mail us at [email protected].

Branch Office/Stocking Warehouse LocationCorporate Headquarters

A word on our Pressure Switch Brochure...

Pressure switches are one of Dwyer Instrument’s broadestproduct lines. Dwyer, along with divisions Mercoid andW.E. Anderson, offers products for just about any pres-sure application that you may have. This brochureoffers a quick overview of our products to assist youin finding the right pressure switch for your needs.

Dwyer can provide pressure sensing solutions fromhigh volume OEM to heavy industrial use. Throughinnovation we continually increase the productoffering with new pressure sensing technologiesand product improvements. Dwyer’s product lineincludes a variety of pressure switches that canhandle pressures from full vacuum to 8000 psig(551 bar), and we can provide solutions for gases,liquids, and combustible media.

We have always felt that the best does not have tocost you the most, and encourage you, the customer,

to check out our value and what we believe to be themost competitively priced products on the market.

Sincerely, The Dwyer Instruments Team

©Copyright 2009 Dwyer Instruments, Inc. 4/09 Printed in U.S.A.

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