Masoneilan 74000 Series Heavy Oil Process Valve

Sizes

2” x 3” through 12” x 14” (50 x 80 mm through 300 x 350 mm)

Ratings & Connections

flanged or hub: ANSI 150 – 2500

Body Materials

347 stainless steel; other alloys on request

Actuators

model 87/88 multi-spring-opposed diaphragm; model 51/52/53 piston cylinder

Trim

Body-retained seat ring with sacrificial venturi for body protection; fluted or bull-nosed plug with continuous heavy shaft guiding; trim components available in high alloy base with erosion resistant coating or ceramic; purge connection for flushing upper body cavity

Inherent Characteristics

linear

Advantages

The Masoneilan 74000 series valve, at its base level, is distinguished by a single-stage trim housed within an angle-style valve body, featuring straightforward flow geometry for both the valve body and trim. This uncomplicated flow path has demonstrated effectiveness in specific heavy oil applications, where high-velocity erosive jets tend to damage more intricate valve trims. The product has achieved notable success in challenging refining environments, particularly where the presence of entrained solids poses significant issues, and where other conventional severe service trims have experienced catastrophic failures. The Masoneilan 74000 Series has garnered widespread industry recognition for its reliability in the most demanding conditions and is often specifically recommended by seasoned users. In a market seeking differentiated products, the 74000 is recognized for its unique design and exceptional performance.

Refining Solutions

With a legacy spanning over 35 years, the Masoneilan 74000 series valves play a critical role in sophisticated oil refining processes. One notable method is Residual Hydrocracking, which operates downstream of the vacuum unit to transform “bottom-of-the-barrel” residuals into valuable mid-distillates, such as diesel. This fluid contains contaminants from its origin and particulate matter, and when mixed with abrasive catalysts, it can rapidly damage standard control valves, sometimes within days. This is where the Masoneilan 74000 series excels.

The 74000 series represents an advanced solution for severe service applications, particularly in highly erosive environments where traditional high-pressure reduction and severe service products, such as the Masoneilan LincolnLog and 77003 series, reach their limitations due to the erosive nature of the flow.

Distinctive Severe Service Design

The process of Residual Hydrocracking presents unique challenges that necessitate valve characteristics capable of withstanding the combined stresses of pressure, temperature, and entrained solids, which lead to significant erosion. In some instances, the erosive conditions are so extreme that conventional trim staging becomes ineffective and ultimately self-limiting.

Longer Intervals Between Maintenance

Refinery units generally aim for turnaround intervals of approximately three years. However, many inferior control valves result in significantly shorter intervals, often measured in months rather than years. The Masoneilan 74000 Series has demonstrated substantially longer operational cycles, frequently achieving targets of over three years, with some applications even reaching double those intervals.

Applicable Industries

Refining.

Key Applications : Residual Hydrocracking, Heavy Oil Letdown, 2-phase erosive service.