The Gazkon model GHR is a direct action, spring controlled, pressure reduction regulator. Normally used for the supply of gas to residential complexes, commercial applications, small industries (burner, boiler and process applications) and smaller antenna networks.
The Gazkon model GHR is a direct action, spring controlled, pressure reduction
regulator. Normally used for the supply of gas to residential complexes, commercial
applications, small industries (burner, boiler and process applications) and smaller
antenna networks.
As standard the GHR regulators can be used on natural gas, LPG and most clean
dry gasses.
Two versions are currently available;
• GHR for outlet pressures of 50 to 300 mbar.
Both versions utilize a fully balanced valve plug. This ensures that the outlet
pressure is maintained at the required setting even with changes in the inlet
pressure.
As an option the GHR regulators can be equipped with a safety shut off valve
which closes off the gas supply immediately and totally in the event of a problem.
Operation is by the outlet pressure reaching an adjustable pre-set over (high) or
under (low) pressure setting. Manual re-set.
As an optional feature the GHR can be fitted with a limited capacity internal relief
valve.
The Gazkon GHR is a pressure regulator with control of the outlet pressure achieved by a combination of a balanced valve plug, orifice, adjustable spring and a diaphragm assembly. Gas flow is between the regulator valve plug and the orifice. Tight shut-off is ensured by the spring force pushing the regulator valve plug against the orifice. Pressure control is achieved by the diaphragm sensing changes in the outlet pressure (which receives on its lower side the outlet pressure, and on the topside the spring load), and the spring (adjusted to the desired outlet pressure setting) moving the valve plug to the correct position to maintain the required outlet pressure. Accuracy is ensured independent of any changes in inlet pressure or changing flows, by the balanced valve plug assembly. Opening; Flow increases, the pressure in the regulator outlet reduces. This reduced pressure is sensed under the main diaphragm. The force of the spring setting is now higher than the required outlet pressure. Due to the force of the spring pushing downwards via the linkage mechanism, the regulator OPENS, returning the outlet pressure to the required level. Closing; Flow decreases, outlet pressure increases on the outlet side of the regulator and below the diaphragm. The force of the pressure under the diaphragm is now higher than that of the spring causing the diaphragm to move higher, the regulator CLOSES.
