Comisa 190 straight two-pipe radiator connection valve 3/4″ Eurocone × 3/4″ – 8821010
The Comisa 190 8821010 is a straight twin radiator connection valve, also known as an H-block, designed for radiators with bottom flow and return connections.
Its straight configuration is suitable for installations where the supply and return pipes enter from the floor. For installations where the pipes enter from the wall, an angled version such as the Comisa 191 is normally used.
Two ball shut-off valves are integrated into the valve body. They are operated with a flat-blade screwdriver and allow the flow and return connections to be closed independently. The radiator can therefore be isolated for servicing, replacement or maintenance without draining the entire heating system.
The radiator connections use 3/4-inch flat seals, while the pipe side has two 3/4-inch Eurocone connections. Suitable compression fittings must be selected according to the pipe material and dimensions.
The valve body is manufactured from nickel-plated brass. The valve is suitable for heating systems with a maximum operating pressure of 10 bar and a maximum operating temperature of 100 °C.
Main benefits
- straight configuration for pipes entering from the floor;
- suitable for two-pipe heating systems;
- designed for bottom-connected radiators;
- two integrated ball shut-off valves;
- independent isolation of flow and return;
- operated using a flat-blade screwdriver;
- flat sealing on the radiator side;
- 3/4-inch Eurocone pipe connections;
- nickel-plated brass body;
- allows radiator servicing without draining the complete system.
Technical specifications
Manufacturer: Comisa
Series: 190
Official product name: Double straight ball valve – flat seal
Technical code: MT019000707N
Catalogue code: 8821010 / 88.21.010
Product type: straight double radiator connection valve
Alternative name: straight two-pipe H-block
Heating system: two-pipe
Radiator connection: bottom connection
Design: straight
Pipe connections: 2 × 3/4″ Eurocone
Radiator connections: 2 × 3/4″
Radiator seal type: flat seal
Shut-off elements: 2 integrated ball valves
Operation: flat-blade screwdriver
Body material: nickel-plated brass
Maximum operating pressure: 10 bar
Maximum operating temperature: 100 °C
Kvs flow coefficient: approximately 5.4 m³/h