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149 CONGRESS ST, LOWELL
(800) 929-9101
Engineering & Public Procurement Reference Dossiers

Technical Cross-Reference & Public Procurement Library

Practical field guides for steam trap cage unit conversions, obsolete circuit breaker and fuse identification, and Massachusetts COMMBUYS FAC124 / MHEC G14 & G19 purchasing.

Plumbing, PVF & Steam Engineering

New England Institutional Steam Trap & Barnes & Jones Cage Unit Cross-Reference Guide

Across 1920s–1980s Massachusetts and New Hampshire schools, municipal buildings, churches, hospitals, and mill complexes, failed steam traps are a leading cause of boiler short-cycling, water hammer, overheated rooms, and wasted heating fuel. Learn how to identify legacy trap bodies and drop in calibrated Barnes & Jones Cage Units without breaking corroded radiator unions.

Read Complete Guide (GUIDE 01 • STEAM SPECIALTIES & HYDRONICS) →
COMMBUYS FAC124 • MHEC G14/G19 • M.G.L. c. 30B

Massachusetts Public Buyer’s Guide: COMMBUYS FAC124 (#201354), MHEC G14/G19 & Form ST-5 vs. ST-4 Rules

Because Statewide Contract FAC124 and MHEC Contracts G14 & G19 are already competitively bid by the Commonwealth’s Operational Services Division (OSD) and MHEC, eligible public facility managers, school business administrators, housing authorities, and university buyers in Massachusetts can order covered supplies directly from Frank P. McCartin Co., Inc. without running a separate local bid.

Read Complete Guide (GUIDE 02 • MASSACHUSETTS PUBLIC PROCUREMENT & TAX COMPLIANCE) →
Electrical & Industrial Electronics

Identifying & Replacing Obsolete Circuit Breakers, Fuses, Motor Starters & Micro Switches

When a 40-year-old motor starter, special time-delay relay, or molded-case circuit breaker trips in an older school boiler room or manufacturing line, replacing the entire panelboard is rarely feasible on short notice. Here is how our Electrical & Electronics Desk (978-454-9101 • ELE@goindustrialsupplies.com) cross-references and sources drop-in replacements.

Read Complete Guide (GUIDE 03 • LEGACY ELECTRICAL, ELECTRONICS & MOTOR CONTROLS) →
149 CONGRESS ST, LOWELL, MA • TRADE COUNTER & MUNICIPAL DESK COMMBUYS #201354 • MHEC G14 / G19

Need an Engineered Cross-Reference for an Unlisted Part?

Direct counter routing to Electrical & Electronics (ELE@goindustrialsupplies.com • 978-454-9101), Plumbing, PVF & Steam (PVF@goindustrialsupplies.com • 978-454-7606), or Finance/Tax-Exempt (ar@goindustrialsupplies.com • 978-453-1681).

Direct Counter Routing (Mon–Fri 7:00 AM – 4:00 PM) •