Media Containment Unit Ball Valve
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Ball Valve Accessory Media Containment Unit

Bray Media Containment Unit (MCU) delivers unmatched sealing performance and environmental protection for demanding industrial ball valve applications including high-cycle, cryogenic, high-temperature, and steam services

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Product Overview

Corrosion-resistant stainless steel construction ensures extended service life in harsh environments

API 607: Fire-Safe Design for Industrial Applications

Bray’s Media Containment Unit (MCU) delivers unmatched sealing performance for demanding industrial ball valve applications including high-cycle, cryogenic, high-temperature, and steam services, providing enhanced safety, environmental protection, operational reliability, and compliance with environmental standards. Bray’s MCU is designed to prevent accidental and undesirable emissions, leaks, or discharges. If the primary seal fails, the MCU’s secondary seal prevents leakage, while the MCU’s side port can be used for fugitive emission monitoring, leak detection, fugitive emission diversion, use as a positive pressure seal, and as an emergency repair mechanism allowing sealant injection through a flat-head check valve. Bray’s MCU is constructed from investment cast stainless steel for corrosion resistance in harsh environments. Bray’s MCU is available in sizes 1/4” to 10” (6.35mm to 254mm) and can be factory pre-installed on Triad series, 7000/8000 series, S7500/S7700 series, F15/F30 series, RF15/RF30 series, and S85 series. The MCU can also be retrofitted through simple field installation. With Bray’s MCU, industrial plants can significantly reduce operating costs, decrease unscheduled maintenance events such as leak detection and repair (LDAR), thereby reducing production downtime and improving productivity.

Technical Specifications

ParameterValue
Size Range1/4” to 10” (6.35mm to 254mm)
Accessory TypeBall Valve Media Containment Unit
Valve CompatibilityTriad series, 7000/8000 series, S7500/S7700 series,
F15/F30 series, RF15/RF30 series, S85 series
ApplicationFugitive emissions, emission control, corrosive media, high cycle rates, cryogenic and high temperature, monitoring, stem packing injection, steam production, positive pressure seal

FAQ

How does the Bray Media Containment Unit (MCU) help control leakage when the ball valve primary seal fails?

The MCU features a secondary seal structure. When the ball valve primary seal fails, the secondary seal helps prevent media leakage, enhancing valve sealing safety in demanding industrial applications.

What on-site maintenance and emissions management functions does the MCU side port support?

The MCU side port can be used for fugitive emission monitoring, leak detection, fugitive emission diversion, positive pressure sealing, and emergency repair. The side port also allows sealant injection through a flat-head check valve, serving as a stem packing device.

What Bray ball valve series and size ranges are compatible with the MCU?

The MCU is compatible with Triad series, 7000/8000 series, S7500/S7700 series, F15/F30 series, RF15/RF30 series, and S85 series ball valves. The applicable size range is 1/4 inch to 10 inches (6.35 mm to 254 mm). Specific configuration should be confirmed based on actual model and application conditions.

What is the application value of the MCU under high-cycle, cryogenic, high-temperature, steam, or corrosive media conditions?

The MCU is constructed from corrosion-resistant investment cast stainless steel and is suitable for high-cycle, cryogenic, high-temperature, steam, and corrosive media applications. Its fire-safe design complies with API 607, and the secondary seal and side port support leakage control, monitoring, and maintenance.

Can the MCU only be pre-installed on new valves, or can it be retrofitted to existing ball valves?

The MCU can be factory pre-installed on Triad series, 7000/8000 series, S7500/S7700 series, F15/F30 series, RF15/RF30 series, and S85 series. For existing valves, the MCU can also be retrofitted through field installation. Specific compatibility should be confirmed based on valve model and actual application conditions.

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