Flanged Ball Valve - Series B2.1 for Gas - DN 80; L=180mm BRA.B2.100 GAS

Product detailed description

Flanged ball valves are essential components in gas distribution systems where secure shut-off and ease of operation are required. This IVAR model is commonly used in industrial and commercial gas infrastructure, including gas supply lines, process systems and utility networks. Installers working on gas systems will find this valve suitable for both end-of-line and intermediate connections. Its full-bore design ensures minimal pressure drop and smooth flow characteristics. The valve is not intended for steam or flow regulation, and must be installed with care to avoid misalignment or improper torque application.

Technical parameters

Material: body	telo
Nominal diameter	DN 80
Nominal pressure	PN 16
Weight	14.95 kg
Code	B2100080GAS
Brand	IVAR

The nominal diameter (DN 80) determines the flow capacity and compatibility with piping systems. The pressure rating (PN 16) indicates the maximum allowable working pressure under standard conditions. These parameters are critical for correct sizing and system integrity. The valve operates within a temperature range of -10°C to +70°C, making it suitable for environments where ambient temperatures vary.

Installation and connection

Correct installation involves aligning the valve with the pipeline and securing it using flanges that match the PN 16 rating per EN 1092-1. The valve must be mounted in a position that allows for easy access during operation and maintenance. Installers should ensure that the flange faces are clean and free from debris before bolting. Torque specifications should follow the manufacturer’s guidelines to prevent gasket damage or leakage. A common mistake is over-tightening the bolts, which can distort the flange or damage the sealing surfaces. The valve should be fully open during installation to reduce stress on the body and internal components.

Compatibility and accessories

This valve is compatible with gas systems classified under G1 and G2 according to PED 2014/68/EU. It requires matching flanges rated for PN 16 and must be connected to piping of the same nominal diameter. Accessories such as actuators can be added for remote operation, provided the mounting interface conforms to ISO 5211. No additional products are required for basic installation, but system designers should verify the need for pressure regulators or flow meters depending on the application.

Technical background for designers

The valve operates via a rotating ball with a through-hole, allowing full flow when aligned with the pipeline. The ball is made of brass (CuZn40Pb2) and is sealed against the body using PTFE. The stem is made of chrome-plated brass and is supported by two NBR seals. The body is cast from ductile iron (GJS400-15), which offers high strength and resistance to mechanical stress. The valve’s full-bore design minimizes turbulence and pressure loss. For optimal performance, it should be integrated into systems where frequent shut-off is not required and where operating pressures remain within the specified limits. Long-term efficiency depends on maintaining clean internal surfaces and avoiding exposure to corrosive media or excessive vibration.

Service and operation

Regular inspection of the sealing surfaces and stem movement is recommended to ensure continued leak-free operation. No scheduled maintenance is required beyond visual checks for wear or corrosion. If the valve becomes stiff during operation, it may indicate the need for lubrication of the stem or replacement of the seals. The valve should be operated fully open or fully closed to avoid damaging the ball or seating surfaces. If a leak is detected, the system should be depressurized and inspected for damaged gaskets or flange misalignment.

Frequently asked questions

Can this valve be used with gas class G3?
No, the valve is certified for use with gas classes G1 and G2 according to PED 2014/68/EU. Using it with higher-pressure gases may exceed its design limits.

Is it possible to retrofit an actuator to this valve?
Yes, the valve has an ISO 5211 interface for actuator mounting. Ensure the actuator is compatible with the torque requirements and stroke length.

Can this valve be used in steam applications?
No, the valve is not suitable for steam due to limitations in material and seal performance at elevated temperatures and pressures.

What is the maximum allowable operating temperature?
The valve is rated for operation between -10°C and +70°C. Exceeding these limits may affect the integrity of the seals and the body material.