WAFER J9 - disk nickelled cast iron; EPDM - DN 65; L=46mm BRA.J9.100

Product detailed description

Flanged shut-off valves are essential components in heating, ventilation and water supply systems. They are used to isolate sections of the system for maintenance or repair. The IVAR WAFER J9 DN 65 is designed for installation in systems with nominal pressures up to PN 16 and temperatures within the range of -10°C to +120°C. It is commonly used in residential and commercial buildings for central heating, hot water distribution and compressed air systems. The compact design and flanged connection make it suitable for integration into standard pipe layouts without requiring excessive space.

This model is particularly suited for applications where a reliable and durable shut-off is required. It is not recommended for use with steam or media containing oils or hydrocarbons. The valve is installed between two flanges and is actuated via a locking lever. The sealing material ensures a tight closure, and the cast iron body provides mechanical strength and corrosion resistance.

Technical parameters

Material	body - GJS 400-15 cast iron
Nominal diameter	DN 65
Nominal pressure	PN 16/PN10
Weight	2.45 kg
Code	J9.100.065
Brand	IVAR

The nominal diameter of DN 65 indicates the size of the pipe connection. The nominal pressure of PN 16/PN10 defines the maximum allowable operating pressure under specified temperature conditions. These parameters are crucial for correct sizing and system compatibility. The valve must be selected to match the pressure and temperature conditions of the installation to ensure long-term performance and safety.

Installation and connection

The IVAR WAFER J9 DN 65 is installed between two flanges according to EN 1092-1 standards. The valve must be positioned so that the flow direction is aligned with the system layout. The flange faces must be clean and free of debris before tightening the bolts. The flanged connection requires standard bolts and washers, which are not included. It is important to ensure that the flange faces are parallel and that the bolts are tightened evenly to avoid leakage. A common mistake is over-tightening the bolts, which can damage the sealing material or deform the flange faces.

Compatibility and accessories

The valve is compatible with standard flanged pipe systems operating within the specified pressure and temperature ranges. It is not suitable for use with steam or media containing oils or hydrocarbons. The locking lever is included for manual operation. No additional accessories are required for standard installation. The valve is not compatible with systems requiring automatic control or remote operation.

Technical background for designers

The IVAR WAFER J9 DN 65 operates by closing a disc against an EPDM sealing ring to block the flow. The disc is made of nickelled cast iron, which provides corrosion resistance and durability. The body material, GJS 400-15 cast iron, offers high mechanical strength and thermal stability. The EPDM sealing material is suitable for use with water and air but is not compatible with oils or hydrocarbons. The valve is designed for integration into heating and water systems where a reliable shut-off is required. The service life and efficiency are influenced by the operating conditions, particularly temperature and pressure fluctuations.

Service and operation

The valve requires no regular maintenance under normal operating conditions. It is important to ensure that the lever is in the fully open or closed position to prevent wear on the sealing surfaces. The valve should be inspected periodically for signs of leakage or corrosion. If leakage is detected, the sealing material may need to be replaced. The valve should not be operated partially open for extended periods, as this can cause uneven wear and reduce the sealing effectiveness.

Frequently asked questions

Can the IVAR WAFER J9 DN 65 be used with steam?
No, the valve is not suitable for use with steam. The sealing material and body material are not designed to withstand the high temperatures and pressures associated with steam systems.

Is the IVAR WAFER J9 DN 65 suitable for use with hydrocarbons?
No, the valve is not suitable for use with hydrocarbons. The EPDM sealing material is not compatible with hydrocarbon-based media and may degrade over time.

Can the IVAR WAFER J9 DN 65 be used in compressed air systems?
Yes, the valve is suitable for use in compressed air systems. It is designed for nominal pressures up to PN 16 and temperatures within the range of -10°C to +120°C.

Is the IVAR WAFER J9 DN 65 compatible with automatic control systems?
No, the valve is not compatible with automatic control systems. It is manually operated via a locking lever and does not have provisions for remote or automatic actuation.