mercoid for sale, brand-new and used.

SquareTrade © AP6.0 NEW DWYER MERCOID CONTROL PRESSURE SWITCH AP-7021-153-39 You are bidding on a Brand New in the Box, Dwyer Mercoid Diaphragm Operated Pressure Switch, Model# AP-7021-153-39-- range 10 to +125 . Reliable and convenient, series AP pressure switch is a compact switch for instrument air or other low pressure applications. Visible setpoint and external adjustment add convenien

SquareTrade © AP6.0 NEW DWYER MERCOID CONTROL PRESSURE SWITCH CS-30 You are bidding on a Brand New in the Box, Dwyer Mercoid Diaphragm Operated Pressure Switch, Model# CS-30 The Series CS Diaphragm Pressure Switch is ideal for instrument panels, small compressors and general industrial applications. Visible set point and easy-to wire SPDT snap switch reduce installation time. This switch opera

listed as is, all sides shown.

This is an untested antique mercoid valve unit, has a large mercury tilt switch (may be hard to ship?)

NEW OLD STOCK MERCOID CONTROL MERCURY SWITCH 9-8107SC PAYPAL PAYMENT PREFERRED. SHIPPING IN THE UNITED STATES ONLY. AS IS

Here we have the Mercoid Control Corp. pressure control type DR-61-160L R9S, serial no. 3D 179190, switch no.

New- never used. Open box. DWYER MERCOID CONTROL PRESSURE SWITCH CS-30 Serial: T41L-M43537 Electrical Rating Each SPDT Snap Switch 12 A/ 120 VAC 8 A/ 240 VAC 7 A / 277 VAC 1/8 HP 120 VAC, 1/4 HP 240 VAC Please send questions through messages or call 708-717-3868 if you require more help with this item.

MERCOID CONTROLS DA31-103 R.3A PRESSURE SWITCH Dual Pressure switch settings

MERCOID MERCURY VACUUM PRESSURE CONTROL SWITCH DA31-127 NUMBER 9-51 MERCONTROL Up for your consideration is this used Mercoid Mercury control switch number DA31-127. This is a used adjustable mercury pressure control switch, and is in excellent working condition. Pressure range is adjustable via the knobs in the lower right hand corner.

NEW MERCOID DA31-153-2 PRESSURE SWITCH 0-30IN HG VAC 6IN FACE 1/4NPT My items were purchased through a liquidation sale. This is NEW inventory and are not covered by any manufacturer's warranty. I will ship within 48 hours after payment clears.

Water level control, cast iron chamber, SPST mercury switch, opens on increase. Heavy Duty, Cast Iron Chamber Designed for boiler applications, the M

You are bidding on a vintage powers mercoid pressure control type DA31-2. Got Questions?.... Just email Sold as Pictured Additional pictures will be provided upon request, Sold as pictured Will combine shipping with multiple purchases, If paid by 8:00AM Eastern Time will be shipped that day

**PLEASE READ ENTIRE DESCRIPTION** VINTAGE MERCOID SWITCH "TYPE PQ #70182" WITH WESTERN ELECTRIC TAG / NAME PLATE MOUNTED TO WOOD BASE PLATE, WHICH IS 7 3/4" SQUARE x 3/4" THICK. THIS IS A VERY UNIQUE ITEM VERY GOOD LOOKING OVERALL CONDITION, UN-TESTED

SUPERIOR Mercoid DA-7031-153-7 pressure switch w/ Hyett PRESSURE SENSING DIAPHRAM - ASSEMBLY

Thanks for looking this Mercoid DA31-153-9 is standard equipment for the Joslyn Clark and Sylvania Electric fire pump controllers, Because of its universal contacts it will also work with a Metron, Firetrol ,Cuttler hammer andMaster control systems electric and diesel fire pump controller. This particular switch was taken out of a working Metron fire pump controller that was replaced due to an upgrade.

This is a working Mercoid pressure switch was removed from a Master DC diesel fire pump controller that was taken out of service due to an upgrade, Has the bracket to back pan mount in a Master DC ,DCB, DCFRA or DCFB Diesel fire pump controller.I tested the switch with air and gauge switch is in range. Will also work with a Metron Diesel or electric as well as firetrol.

Welcome Dwyer Instruments Inc. Mercoid controls pressure switchModel # DAF-31-156-3A PSIG range looks to be 1/8 to 20 psigunit is complete with instructions for installation. Thanks for looking.

Up for Buy it now or Best offer is Antique Rare Mercoid Liquid Mercury tube Relay Switch Electronic This unit is in working condition This is from an estate of a 90 year old retired electrician. I have 3 of these 2 have metal mercoid Covers 1 does not. the last one will be sold without the cover...

THIS IS A NEW MERCOID PRESSURE CONTROL,  15 PSIG VACUUM, 10 PSIG DIFFERENTIAL,  PRL-3 RG P2 UL. FREE SHIPPING. CHECK OUT MY 100% SELLER FEEDBACK AND BUY WITH CONFIDENCE. 

Mercoid Pressure Switch Manufacturer: MERCOID Model: DA-21-2-10S Date Code:T28W (This is an unused item from our shelf and in Box, Please see pictures)