WAFER J9 - disk nickel cast iron; EPDM - DN 300; L=78mm BRA.J9.100

Product detailed description

Wafer-style shut-off valves are commonly used in central heating systems, ventilation systems and water supply lines in commercial and industrial buildings. These valves are installed between flanges to isolate sections of the system for maintenance or to regulate flow. The WAFER J9 DN 300 is designed for use in systems operating within a temperature range of -10°C to +120°C. It is suitable for water, compressed air and other non-aggressive fluids, but not for steam or oil-based media. The compact design allows for installation in tight spaces, making it ideal for retrofitting or new installations where space is limited.

Technical parameters

Material	Body - GJS 400-15 cast iron
Nominal diameter	DN 300
Nominal pressure	PN 16/PN10
Weight	40.25 kg
Code	J9.100.300
Brand	IVAR

The valve is rated for PN16 and PN10 flange connections, meaning it can be used in systems with varying pressure requirements. The DN 300 nominal diameter determines the flow capacity and compatibility with the rest of the system. The body material, GJS 400-15 cast iron, ensures sufficient strength and durability for long-term use in standard heating and water applications. The EPDM sealing material is suitable for temperatures up to +120°C and provides a reliable seal against water and air.

Installation and connection

The WAFER J9 DN 300 is installed between two flanges in accordance with EN 1092-1 standards. The valve must be positioned so that the flow direction is aligned with the system layout. The flange surfaces must be clean and free of debris to ensure a proper seal. The valve is not suitable for steam or oil-based media, so it must not be used in systems where these fluids are present. Common installation errors include incorrect flange alignment, over-tightening of bolts, or using incompatible sealing materials. The valve must be fully open during installation to avoid damaging the internal components.

Compatibility and accessories

The valve is compatible with flanged piping systems operating within the specified pressure and temperature ranges. It is not suitable for use with steam or oil-based media. No additional accessories are required for standard installation. The valve must be used with flanges of the same nominal diameter and pressure rating. No related products are available for this model.

Technical background for designers

The WAFER J9 DN 300 operates as a shut-off valve, using a disc to block or allow the flow of fluid. The nickel-plated cast iron disc provides resistance to corrosion and wear. The EPDM sealing material ensures a tight seal against water and air. The valve is designed for integration into heating and water systems where isolation of a section is required. The service life and efficiency of the valve depend on the quality of the flange connection, the cleanliness of the system and the absence of aggressive media. The valve is not suitable for use with steam or oil-based media due to the properties of the sealing material.

Service and operation

The valve requires minimal maintenance. The flange connection should be checked for leaks and tightened if necessary. The internal components should remain intact if the valve is operated within the specified temperature and pressure ranges. No service intervals are specified in the technical data. The valve should be inspected during system maintenance to ensure that it functions correctly. If the valve is used outside its specified parameters, it may require replacement due to damage to the sealing material or internal components.

Frequently asked questions

Can the WAFER J9 DN 300 be used in steam systems?
No, the valve is not suitable for steam systems due to the EPDM sealing material, which is not resistant to high-temperature steam.

Is the valve compatible with oil-based fluids?
No, the valve is not suitable for oil-based fluids or hydrocarbons, as the sealing material may degrade in contact with these media.

Can the valve be used with compressed air systems?
Yes, the valve is suitable for compressed air systems operating within the specified pressure and temperature ranges.

Is the valve suitable for use with flanges of different pressure ratings?
The valve is compatible with PN16, PN10 and PN6 flanges. It should not be used with flanges of a different pressure rating without verifying compatibility with the system design.