Loading, please wait...

New Mercoid 9-78sa Mercury Switch *read* • $99
New Mercoid 9-78sa Mercury Switch *read*

99$

New Mercoid Mercury Switch 9-8107sc • $50
New Mercoid Mercury Switch 9-8107sc

50$

Mercoid Mercury Switch 3-91R 11 Lead BBR Vintage Read • $99
Mercoid Mercury Switch 3-91r 11 Lead Bbr Vintage Read

99$

New Mercoid 9-78sa Mercury Switch • $89
New Mercoid 9-78sa Mercury Switch

89$

MERCOID MERCURY SWITCH 9-8307SC-8T Pair Of New Old Stock Switches • $99
Mercoid Mercury Switch 9-8307sc-8t Pair Of New Old Stock Switches

99$

Mercoid Control DA-532-3 Mercury Switch • $199
Mercoid Control Da-532-3 Mercury Switch

199$

Mercoid 9-6107sc-8t Mercury Switch Nsmp • $1250
Mercoid 9-6107sc-8t Mercury Switch Nsmp

1,250$

MERCOID 9-6707SC MERCURY SWITCH ( Lot Of 2) • $40
Mercoid 9-6707sc Mercury Switch ( Lot Of 2)

40$

MERCOID 9-6707SC Control MERCURY Switch Contact • $25
Mercoid 9-6707sc Control Mercury Switch Contact

25$

NEW Dwyer Instruments / Mercoid Control - AS-9 - Pressure Switch 4 AMP 0-15 PSI • $42.98
New Dwyer Instruments / Mercoid Control - As-9 - Pressure Switch 4 Amp, 0-15 Psi

42.98$

New Mercoid DA-33-2-2 Mercury Switch CAN SHIP OVERIGHT OR FREE • $822.50
New Mercoid Da-33-2-2 Mercury Switch Can Ship Overight Or Free

822.50$

Mercoid PG - 153 Vacuum - Pressure Switch NOS • $128
Mercoid Pg - 153 Vacuum - Pressure Switch , Nos

128$

Mercoid DA-34-1278-3A Filled Pressure Switch • $299.23
Mercoid Da-34-1278-3a Filled Pressure Switch

299.23$

Mercoid Control Dpa-33-153 R62 High Power Differential Mercury Pressure Switch • $160
Mercoid Control Dpa-33-153 R62 High Power Differential Mercury Pressure Switch

160$

Mercoid DAF31-153 Bourdon Tube Mercury Pressure Switch • $35
Mercoid Daf31-153 Bourdon Tube Mercury Pressure Switch

35$

30%
Mercoid Control PG-153 RG P1 Pressure Switch • $245
Mercoid Control Pg-153 Rg P1 Pressure Switch

245$ 350$

Brand New Mercoid Control Daw-423-4122-11s 3s 48 4x Pressure Switch • $49.99
Brand New Mercoid Control Daw-423-4122-11s 3s 48 4x Pressure Switch

49.99$

Mercoid PG-2PRP2 GAS PRESSURE/DIFFERENTIAL PRESSURE SWITCH 15psig / 30 HG Max • $34
Mercoid Pg-2prp2 Gas Pressure/differential Pressure Switch 15psig / 30"hg Max

34$

New Mercoid Da-534-3-8 10-200 Psi Pressure Switch Weather Proof Spdt • $299.99
New Mercoid Da-534-3-8 10-200 Psi Pressure Switch Weather Proof Spdt

299.99$

Mercoid Controls Bourdon Tube Pressure Switch DA-31-2-5-DA • $349
Mercoid Controls Bourdon Tube Pressure Switch Da-31-2-5-da

349$

Mercoid Mercury Pressure Switch DS-231-3-1 • $74.99
Mercoid Mercury Pressure Switch Ds-231-3-1

74.99$

MERCOID MERCURY SWITCHES 5-9-81 Sc New In Box Old Stock • $21.73
Mercoid Mercury Switches 5-9-81 Sc New In Box Old Stock

21.73$

Mercoid Control DA 31-2 R 1 DA-31-2-R1 DA31-2R1 Mercury Pressure Switch • $49
Mercoid Control Da 31-2 R 1, Da-31-2-r1, Da31-2r1, Mercury Pressure Switch

49$

Mercoid DAF31-153 Bourdon Tube Mercury Pressure Switch • $63.80
Mercoid Daf31-153 Bourdon Tube Mercury Pressure Switch

63.80$

Mercoid DA-31-153-5 Bourdon Tube Mercury Pressure Switch • $82.50
Mercoid Da-31-153-5 Bourdon Tube Mercury Pressure Switch

82.50$

1941 Ad The Mercoid Corporation Chicago Controls Manufacturer Mercury Switch • $8.99
1941 Ad The Mercoid Corporation, Chicago Controls Manufacturer Mercury Switch

8.99$

Mercoid Control FM-437-152-3511 Oil Or Water Mercury Switch Temperature Control  • $89.99
Mercoid Control Fm-437-152-3511 Oil Or Water Mercury Switch Temperature Control 

89.99$

Mercoid 9-6107sc-8t Mercury Switch Nsmp • $1705
Mercoid 9-6107sc-8t Mercury Switch Nsmp

1,705$

Mercoid Dwyer DPA-33-3 R.61 9-51 Pressure Switch DPA333 (OK) • $269.99
Mercoid Dwyer Dpa-33-3 R.61 9-51 Pressure Switch Dpa333 (ok)

269.99$

Mercoid Dwyer DPA-33-3 R.61 9-51 Pressure Switch DPA333 (OK) • $279.99
Mercoid Dwyer Dpa-33-3 R.61 9-51 Pressure Switch Dpa333 (ok)

279.99$

25%
Mercoid 125-4806 Series 123/123-3 Cast Iron Chamber Low Water Level Control • $446.67
Mercoid 125-4806 Series 123/123-3 Cast Iron Chamber Low Water Level Control

446.67$ 595.56$

MERCOID CONTROL MX 53R-156 RG 75 50/650 Switch Unit New Old Stock See All Pics • $399.99
Mercoid Control Mx 53r-156 Rg 75 50/650 Switch Unit New Old Stock See All Pics

399.99$

MERCOID CONTROL DAF 81-3 R 23K Pressure Controller Mercury Switch • $40
Mercoid Control Daf 81-3 R 23k Pressure Controller Mercury Switch

40$

🇺🇸Mercoid Control DA21-2 Pressure Mercury Switch 0-60 PSIG Parts Only🇺🇸 • $32.75
🇺🇸mercoid Control Da21-2 Pressure Mercury Switch 0-60 Psig Parts Only🇺🇸

32.75$

🇺🇸Mercoid Control DA31-2 Pressure Mercury Switch 0-300 PSIG. Warranty • $99
🇺🇸mercoid Control Da31-2 Pressure Mercury Switch 0-300 Psig. Warranty

99$

1942 Mercoid Print Ad Mercury Switch DA Pressure & Temperature Controls Face • $11.50
1942 Mercoid Print Ad, Mercury Switch Da Pressure & Temperature Controls Face

11.50$

Mercoid 9-8807-bb Mercury Switches T217597 • $39.99
Mercoid 9-8807-bb Mercury Switches T217597

39.99$

Dwyer Mercoid Mercury Switch Temperature Control Fm-437ss-3-3511 Nib • $249.99
Dwyer Mercoid Mercury Switch Temperature Control Fm-437ss-3-3511 Nib

249.99$

Mercoid Control PG-3-P2 Gas Pressure Differential Pressure Switch • $175
Mercoid Control Pg-3-p2 Gas Pressure Differential Pressure Switch

175$

Mercoid Da35 Pressure Switch New In Box • $168.03
Mercoid Da35 Pressure Switch New In Box

168.03$

NOS Mercoid Control Pressure Switch DAW-23-3 RG-9S • $65
Nos Mercoid Control Pressure Switch Daw-23-3 Rg-9s

65$

Mercoid 9-6114sc Mercury Switch (lot Of 6) • $90
Mercoid 9-6114sc Mercury Switch (lot Of 6)

90$

Mercoid DA-31-804-6 Series DA Bourdon Tube Pressure Switch Mercury Switch Tilt • $565.54
Mercoid Da-31-804-6 Series Da Bourdon Tube Pressure Switch Mercury Switch Tilt

565.54$

Mercoid ControlDS-221-3-5SMercury Limit Switch • $100
Mercoid Control,ds-221-3-5s,mercury Limit Switch

100$

Mercoid Control 40458916 DA35-153R2 Pressure Switch W/ Mercury *FREE SHIPPING* • $59.99
Mercoid Control 40458916 Da35-153r2 Pressure Switch W/ Mercury *free Shipping*

59.99$

MRO Brochure - Mercoid - Mercury Switch Temperature Control - C1952 (MR66) • $12.28
Mro Brochure - Mercoid - Mercury Switch Temperature Control - C1952 (mr66)

12.28$

1950 MERCOID AUTOMATIC CONTROLS Original Catalog # 700 Chicago MERCURY SWITCHES • $29.99
1950 Mercoid Automatic Controls Original Catalog # 700 Chicago Mercury Switches

29.99$

Dwyer Mercoid Control Electric Mercury Switch 46-2-6 • $100
Dwyer Mercoid Control Electric Mercury Switch 46-2-6

100$

MERCOID 3-1307SC-8T MERCURY SWITCH ( Lot Of 5) • $50
Mercoid 3-1307sc-8t Mercury Switch ( Lot Of 5)

50$

Mercoid Level Control Mercury Switch 102-g-4820-20-c-60 Pp19-101-c1 120/240v • $900
Mercoid Level Control, Mercury Switch 102-g-4820-20-c-60, Pp19-101-c1, 120/240v

900$

MERCOID CONTROL AK-153 Pressure Switch HVAC Thermostat Regulator USA Vintage • $29.95
Mercoid Control Ak-153 Pressure Switch Hvac Thermostat Regulator Usa Vintage

29.95$

Mercoid 9-4307sc Mercury Switch • $125
Mercoid 9-4307sc Mercury Switch

125$

Mercoid Controls DA-31-2-9 Series Brass Bourdon Tube SPST Pressure Switch • $69.99
Mercoid Controls Da-31-2-9 Series Brass Bourdon Tube Spst Pressure Switch

69.99$

New Mercoid Da-21-153 R 5 S Pressure Switch Mercury Control • $165
New Mercoid Da-21-153 R 5 S Pressure Switch Mercury Control

165$

11%
New Mercoid BB 221-2 Mercury Switch • $109.94
New Mercoid Bb 221-2 Mercury Switch

109.94$ 123.53$

11%
New Mercoid DPA-33-153-62 Mercury Switch • $261
New Mercoid Dpa-33-153-62 Mercury Switch

261$ 293.26$

55%
Mercoid Control With Sealed Mercury Contact Switches 120-240V 3/4HP 3-10AMPS • $135
Mercoid Control With Sealed Mercury Contact Switches 120-240v 3/4hp 3-10amps

135$ 299.99$

11%
New Mercoid BB 221-2 RG. 6S Mercury Switch • $110.44
New Mercoid Bb 221-2 Rg. 6s Mercury Switch

110.44$ 124.09$

Mercoid Control Daw-7023-153-9s • $500
Mercoid Control Daw-7023-153-9s

500$

11%
New Mercoid BB 521-3 RG. 6S Mercury Switch • $110.44
New Mercoid Bb 521-3 Rg. 6s Mercury Switch

110.44$ 124.09$

MERCOID DRW-523-3L Pressure Switch NEW No Mercury Switch • $150
Mercoid Drw-523-3l Pressure Switch New No Mercury Switch

150$

Nos Mercoid Control Ap153-33 Pressure Switch No 72 • $49.99
Nos Mercoid Control Ap153-33 Pressure Switch No 72

49.99$

Mercoid DAF-21-2-8S Pressure Switch T23V-S27441001 NEW • $135
Mercoid Daf-21-2-8s Pressure Switch T23v-s27441001 New

135$

Dwyer Mercoid Mercury Pressure Switch Da-431-4122-3a Nib • $135
Dwyer Mercoid Mercury Pressure Switch Da-431-4122-3a Nib

135$

Dwyer Mercoid DA-31-2-3A Mercury Pressure Switch • $286.10
Dwyer Mercoid Da-31-2-3a Mercury Pressure Switch

286.10$

New Mercoid Control Capp/usa Capp-da-31-2-3a Da-31-2-3a Mercury Pressure Switch • $280
New Mercoid Control Capp/usa Capp-da-31-2-3a Da-31-2-3a Mercury Pressure Switch

280$

Mercoid PG-153-P1 Gas Pressure Mercury Switch 1-30 Inch Water Meter Controller • $249.99
Mercoid Pg-153-p1 Gas Pressure Mercury Switch 1-30 Inch Water Meter Controller

249.99$

Mercoid Control Dpa-33-153 R62 High Power Differential Mercury Pressure Switch • $428.13
Mercoid Control Dpa-33-153 R62 High Power Differential Mercury Pressure Switch

428.13$

MERCOID DAW-23-2-8S Bourdon Tube Pressure Switch • $750
Mercoid Daw-23-2-8s Bourdon Tube Pressure Switch

750$

Dwyer Mercoid Mercury Pressure Switch Model DAW-33-127-8 3S4/4X 13A4 • $149.99
Dwyer Mercoid Mercury Pressure Switch Model Daw-33-127-8 3s,4/4x 13a4

149.99$

Mercoid Control CS-30 Pressure Switch FOR PARTS • $40
Mercoid Control Cs-30 Pressure Switch For Parts

40$

MERCOID CONTROL PGW-153-RG P1 Differential 1-30 Pressure Switch *NEW IN BOX* • $200.17
Mercoid Control Pgw-153-rg P1 Differential 1-30" Pressure Switch *new In Box*

200.17$

15%
Dwyer Mercoid Series DA/DS Bourdon Tube Pressure Switch Bourdon Tube Material 4 • $849.12
Dwyer Mercoid Series Da/ds Bourdon Tube Pressure Switch, Bourdon Tube Material 4

849.12$ 998.97$

Mercoid Da-31-153-rg-8 Nsfb • $199.95
Mercoid Da-31-153-rg-8 Nsfb

199.95$

NOS Dwyer Mercoid DAW-7023-153-15S Weather-proof Bourdon Tube Pressure Switch • $419
Nos Dwyer Mercoid Daw-7023-153-15s Weather-proof Bourdon Tube Pressure Switch

419$

Mercoid Da-35-2-9n Mercury Switch 10a 240v • $170
Mercoid Da-35-2-9n Mercury Switch 10a 240v

170$

Mercoid Control DAW-23-804 RG 5S 2-60 PSIG Mercury Pressure Switch • $165
Mercoid Control Daw-23-804 Rg 5s, 2-60 Psig Mercury Pressure Switch

165$

Rspq-83 Mercury Switches (mercoid). 9-83-bbr 7 -surplus- • $44
Rspq-83 Mercury Switches (mercoid). 9-83-bbr 7" -surplus-

44$

#9a64s Mercury Switches - For Type Pg-153 Mercoid Diaphragm Control Se -surplus- • $40
#9a64s Mercury Switches - For Type Pg-153 Mercoid Diaphragm Control Se -surplus-

40$

Dwyer 9-51saw / 951saw (new In Box) • $84
Dwyer 9-51saw / 951saw (new In Box)

84$

Dwyer 9-51saw / 951saw (used Tested Cleaned) • $66
Dwyer 9-51saw / 951saw (used Tested Cleaned)

66$

Dwyer 9-8807-bb / 98807bb (new In Box) • $57
Dwyer 9-8807-bb / 98807bb (new In Box)

57$

Dwyer 9-81 / 981 (new No Box) • $99
Dwyer 9-81 / 981 (new No Box)

99$

Dwyer 9-83sc / 983sc (new No Box) • $73
Dwyer 9-83sc / 983sc (new No Box)

73$

Dwyer 9-81 / 981 (used Tested Cleaned) • $90
Dwyer 9-81 / 981 (used Tested Cleaned)

90$

Dwyer 9-83sc / 983sc (used Tested Cleaned) • $66
Dwyer 9-83sc / 983sc (used Tested Cleaned)

66$

Dwyer Bb221-2 / Bb2212 (new In Box) • $244
Dwyer Bb221-2 / Bb2212 (new In Box)

244$

Dwyer Bb221-2 / Bb2212 (used Tested Cleaned) • $192
Dwyer Bb221-2 / Bb2212 (used Tested Cleaned)

192$

Dwyer Daw-543-3b-rg-9e / Daw5433brg9e (used Tested Cleaned) • $573
Dwyer Daw-543-3b-rg-9e / Daw5433brg9e (used Tested Cleaned)

573$

Mercoid Control DA34-103 R 3A 120VAC 10A 46746HAT • $225
Mercoid Control Da34-103 R 3a 120vac 10a 46746hat

225$

Mercoid Control Gas Pressure Differential Switch DAH-31-153 • $69.99
Mercoid Control Gas Pressure Differential Switch Dah-31-153

69.99$

  • Application
  • Industrial1
  • Fan Control1
  • Instruments1
  • Type
  • Bourdon Tube Switch2
  • Differential Switch1
  • Vacuum Switch1
  • Material
  • Aluminized Steel1
  • Metal1
  • Stainless Steel1
  • Suitable For
  • Exterior1
  • Interior1
  • Wall1
  • Operation Method
  • Combination1
  • On/Off1
  • Brand
  • Dwyer3
  • Country/Region of Manufacture
  • United States1
  • Current Type
  • AC/DC1
  • Fuse Type
  • Switch6
  • Color
  • Gray4
  • Features
  • Heavy Duty2
  • Resistance Properties
  • Weatherproof2
  • Finish
  • Stainless Steel1
  • Orientation
  • Vertical1
  • Switch Style
  • Combination1
  • Termination Type
  • Power1
  • Compatible Wire Gauge (AWG)
  • 1-51
  • Number in Pack
  • 2-51