EBRO F 012-A Double Flanged Butterfly Valve DN 50-1400

A soft seated double flanged valve built for pressures up to 25 bar

The F 012-A is EBRO ARMATUREN’s soft seated double flanged butterfly valve, designed for high-pressure applications. A vulcanized liner combined with a through-going shaft lets the valve carry pressure loads of up to 25 bar, and the nominal sizes run from DN 50 to DN 1400, a much wider range than the wafer and lug valves in the same resilient-seated family.

The datasheet also lists adjustable bearings for valves up to DN 600 at 16 bar and above. They ensure tightness even at maximum pressure loads and allow refixing during operation, which is useful on trunk mains and pumping stations where a shutdown for rework is hard to arrange.

Technical specifications

Features in the data sheet

• Butterfly valve in double flanged design
• Can be installed in any desired position
• Triple shaft bearings and single flange mounting possible
• Maintenance-free
• Vulcanized liner and through-going shaft for high pressure applications
• Adjustable bearings up to DN 600 for 16 bar and above

Dimensions and weight, standard rows

The data sheet prints several rows for some sizes. The table below uses the unmarked standard rows with fixed bearings up to DN 500 and the adjustable-bearing rows from DN 600, and all lengths are in millimetres. Rows marked with an asterisk in the sheet are not shown here.

At DN 600 the weight is 330 kg for the adjustable-bearing version and 467 kg for the fixed-bearing row in the same sheet, so lifting equipment should be planned from the actual order data.

Torque by operating pressure and flow data

Breakaway torque rises sharply with pressure. The sheet lists the values for 3, 6, 10, 16, 19, 21 and 25 bar; for example, DN 200 needs 59 Nm at 3 bar, 200 Nm at 16 bar and 350 Nm at 25 bar. The sheet applies a factor of 1.3 to powdery media and 1.2 to dry gases or highly viscous media.

For flow, the Kv value at a full 90 degree opening is 589 m3/h at DN 100, 3400 at DN 200, 8120 at DN 300, 14600 at DN 400 and 29400 at DN 600. Velocity limits in the sheet are 4.5 m/s in liquids and 70 m/s in gases, and throttling is linear between 30 and 70 degrees.

Applications

EBRO lists offshore, water and waste water technology, power plants, desalination technology, trunk mains, pipeline applications and pumping stations. Large-diameter isolation in seawater intake, desalination or water transmission lines is a relevant use in coastal Gulf projects. The data sheet itself prints no approvals for this valve, and the material needed for seawater or brine has to be chosen and confirmed with EBRO.

Information to send with an RFQ for the EBRO F 012-A Double Flanged Butterfly Valve DN 50-1400

Valve quotations depend on the service conditions as much as on the size. For the EBRO F 012-A Double Flanged Butterfly Valve DN 50-1400, list the nominal size, pressure class, end connection or flange standard, and the medium with its temperature and pressure range. State the required body, seat and seal materials if a specification already exists.

• Quantity and tag numbers, if the valves belong to a project line list.
• Operation: lever, gearbox, pneumatic or electric actuator, with any accessories such as limit switches or positioners.
• Test and certificate requirements, for example material certificates or pressure test reports.
• Required delivery date and site location in Oman or the wider GCC.

Sending the valve data sheet or line specification lets the configuration be checked before ordering and reduces the risk of receiving a valve that does not match the piping class.

Each quotation for the EBRO F 012-A Double Flanged Butterfly Valve DN 50-1400 states the exact manufacturer part number, the documents that will accompany the shipment, the expected lead time from the factory and the delivery terms to your site. If the part number on an existing nameplate is incomplete or worn, send a clear photograph of the label and of the installed unit, and the correct ordering code can be confirmed with the manufacturer before the offer is issued.

Related items and documents

Smaller or lower-pressure alternatives from EBRO on this site include the Z 611-A wafer valve and the T 211-A PTFE-lined valve; see the control and isolation valves category. Datasheet provided. Seven Star LLC will respond to a request for F 012-A once DN, pressure class and seat material are known.

Frequently asked questions

How large can an F 012-A be?

The data sheet gives DN 50 to DN 1400 and an operating pressure of up to 25 bar with a differential pressure of up to 25 bar.

What temperature range does it cover?

-40 °C to +200 °C depending on pressure, medium and material.

Which seat materials are shown?

NBR or EPDM for the vulcanized seat, with a body in nodular cast iron or carbon steel GP240GH.

Can it be used under vacuum?

Yes, up to 1 mbar absolute according to the data sheet.

What are adjustable bearings for?

They keep the valve tight even at maximum pressure loads and allow refixing during operation; the sheet notes them up to DN 600 for 16 bar and above.