Bray Series F15/F30 Flanged Full-Port Ball Valve, NPS 1/2 to 12

Fire-safe flanged ball valve with a live-loaded stem seal

The Bray Series F15/F30 is a two-piece, full-port flanged ball valve for demanding industrial service. The F15 is rated ASME Class 150 and the F30 ASME Class 300, in sizes NPS 1/2 to 12 (DN 15 to 300). Bray builds the smaller sizes on a floating ball for low torque and long cycle life, and as standard the larger sizes (6 to 12 inch) use a trunnion-style ball support so the ball stays in continuous contact with the seats, which lowers torque and seat wear.

Shutoff is zero leakage in both directions, bodies are investment cast in sizes to 4 inch with heat-number traceability, and the body can be stainless steel, carbon steel or a special alloy. The certified design list is long for this class of valve, covering API 607 fire safety, ISO 15848-1/2 and API 641 fugitive emissions, NSF/ANSI/CAN 61 and 372, CRN, PED 2014/68/EU, UKCA, SIL and ATEX.

Technical specifications

Source: Bray brochure F-2400 (Series F15/F30 soft seated, ASME). The DIN/PN version has its own brochure; steam values are Bray WSP figures for the stated seat.

Fire safety, seat choice and special options

Valves fitted with graphite stem seals are certified to API 607. If heat destroys the resilient seat in a fire, the ball contacts the integral secondary metal seat to form a secure seal, a spiral-wound stainless and graphite body seal prevents external leakage, and the graphite stem rings prevent stem leakage. Seat selection covers the chemical, temperature and cycle duty: PEEK gives high pressure and temperature capability, Tek-Fil reduces torque in high-temperature, high-cycle and steam service, and TFM 1600 offers the chemical resistance of PTFE with lower porosity.

Special options include cavity fillers, media containment units, spring-return handles, NACE MR0175 and MR0103 materials, vented balls, polished internals, a characterized ball (V-Control), special cleaning, chlorine service, silicone-free finish and vacuum service. Manual valves have a locking device, a safety trigger on sizes to 2 inch, a double lock nut design that allows the handle to be removed under line pressure and an anti-tamper padlock provision.

Choosing between F15 and F30 and related Bray ball valves

Take the F15 for Class 150 utility and process lines and the F30 where Class 300 pressure or higher steam pressure is needed. The Series RF15/RF30 one-piece standard-port version and the metal-seated F15/F30, M1 and M4 severe-service valves cover other duties. Please confirm the line medium, temperature, pressure class, seat, end connection standard (ASME or DIN), fire-safe requirement, NACE need, and the actuator or handle type.

Documents and quotation

The Bray brochure F-2400 is attached as the datasheet; the page also lists the operation and maintenance manual, safety manual, part number selection guide, API 608 application note and a recommended specification.

See the wider range of control and isolation valves on our catalogue, or send the model name and order number for a quotation.