Flanged shut-off and balancing valve - EKOFLUX S series - DN 100; Kvs 150,0m3/h BRA.EKOFLUX S

Product detailed description

Flanged shut-off and balancing valves are essential components in commercial and industrial HVAC systems. They are used in heating circuits, central plant piping, and zone distribution lines to regulate flow and isolate sections for maintenance. These valves operate under varying pressures and temperatures, requiring precise engineering to ensure long-term reliability.

In multi-storey buildings, industrial facilities and large-scale commercial complexes, these valves are often installed in primary loops, secondary circuits and bypass lines. Their design must accommodate thermal expansion, vibration and potential chemical exposure from mixed media. Proper sizing and orientation are critical to avoid flow restrictions and pressure drops that could affect system efficiency.

Technical parameters

Material: - body	- telo
Nominal diameter	DN 100
Nominal pressure	PN 16
Weight	26 kg
Code	EKOFLUX.S100
Brand	IVAR

The nominal bore of DN 100 defines the maximum internal flow passage, while the PN 16 pressure rating indicates the valve’s ability to handle operating pressures up to 16 bar. The Kvs value of 150.0 m³/h represents the flow capacity under standard conditions and is used to determine correct sizing for specific applications. These parameters help engineers calculate pressure losses and flow rates within the system.

Installation and connection

The valve is installed using flange connections conforming to EN 1092-1 standards. Ensure that the flange faces are clean and free from debris before tightening bolts evenly to prevent misalignment. Use a torque wrench to apply even force and avoid over-tightening, which can damage the sealing surfaces. Verify that the valve is oriented correctly—some models have directional flow requirements.water or inert gas to confirm the integrity of the flange joints and sealing surfaces.

Compatibility and accessories

This valve is compatible with HVAC systems handling water-based media, including glycol solutions up to 50% concentration. It can also be used in conjunction with differential pressure controllers such as the BRA.EKOFLUX DPCV for advanced flow regulation. When ordering, ensure that all required flanges, gaskets and mounting hardware are included to complete the installation.

Technical background for designers

The operating principle of the EKOFLUX S valve involves a rotating stem mechanism that controls the opening between the body and the seat. The cast iron body (EN GJL 250) provides high mechanical strength and resistance to thermal cycling, while the brass stem (CuZn40Pb2) ensures low friction and corrosion resistance. The EPDM sealing ring provides a tight closure and maintains integrity over a wide temperature range.Service and operation Routine checks should include visual inspection of the flange bolts for looseness, signs of leakage around the stem seal and any unusual resistance when operating the handwheel. If the valve becomes difficult to turn or shows signs of internal leakage, disassemble and inspect the sealing surfaces and EPDM ring for wear or damage. Re-lubricate the stem as needed with a compatible grease.

Frequently asked questions

Can the EKOFLUX S be used with glycol solutions?
Yes, it is suitable for water with up to 50% glycol content.

Is the valve suitable for steam applications?
No, it is not recommended for use with steam or vapour.

Can the valve be used with the BRA.EKOFLUX DPCV?
Yes, it can serve as a pressure source for the BRA.EKOFLUX DPCV on request.

What is the maximum operating temperature?
The valve operates up to a maximum temperature of +140°C.