MMC - MMC International Corporation manufactures vapor control valves, quick connect coupling flanges, product sampling equipment, and its various product measurement instruments, which meet or exceed the standards for “intrinsically safe” equipment set by national governments and certifying agencies around the world. MMC’s primary products include cargo UTI measurement devices and product sampling for closed and restricted applications, tank gauging, sampling station, deck valves (vapor locks), CL deck couplings and CL deck cover and other retail items for the maritime petroleum and chemical transport industry as well as land based petro-chemical facilities. MMC is widely acknowledged for its long history of technological innovation, dependability, and quality of its products. MMC started in the early 1940s as the Marine Plastics Corporation, making deck surfacing for tankers and military vessels. After the close of World War II, the name was changed to the Marine Moisture Control Company to reflect the firm’s rapid expansion as a manufacturer of equipment for the removal of moisture from shipboard machinery and cargo spaces. Over the next several decades, MMC devices–such as its corrosion-preventing gear case dehydrators–became standard components throughout the world’s fleets of tankers. The MMC product line continued to expand with lube oil clarifier coalescers, hydraulic valve systems, draft-indicating and tank-gauging systems, cargo-handling hose couplings, and other crucial items required by petroleum and chemical transport vessels. In 1972, MMC pioneered solid-state electronic gauging equipment for use in hazardous shipboard environments. That new line of equipment was designed to meet the emerging international standards of explosion-proof or flameproof safety in the petroleum and chemical transport fields. Today, this category of highly specialized safety gear is referred to internationally as “Intrinsically Safe Equipment” and MMC remains a state-of-the-art leader in the field it helped invent. Since the 1970s, MMC’s Intrinsically Safe Equipment products have been approved by international certifying agencies such as Factory Mutual, CSA, SAA, EECS, NKK, NK (Japan) and HK. By the 1980s, MMC’s product line had grown to include mechanical, electro-mechanical and electronic monitoring and safety equipment used by industrial facilities involved in the transport, storage and processing of a wide variety of chemicals. In addition, the firm’s technology was adapted for environmental monitoring purposes, spawning yet another new product line beyond the maritime field.


Vapor Control Valves


Restricted UTI Barrels

Oxygen Sensor Gauging Tape System

Restricted Trimode (UTI)

Closed Gas Tight Trimode (UTI) Gauging Tape

Closed Gauging

Tank Dryness and Sounding Valve

Vapor Control Gauging Stations

U/B and U/MB Vapor Control Gauging Stations

Restricted Sampler

Restricted Sampler with Decanting

Accessories and Valve Adaptors

Closed UTI Barrel Adaptors

Sampler Adaptors

Oxygen Sensing Gauging System Closed Gas Tight Version