Fuel valve

A fuel valve, comprising:

• a valve housing accommodating a roll-over valve (ROV);
• an over-pressure relief valve (OPR);
• and
• a pressure retention valve (PRV), the PRV comprising
• a pressure retention disc that is substantially axially displaceable within a top chamber of the valve housing, between a normally closed position in which the pressure retention disc sealingly bears over an outlet port of a fluid flow path and an open position,
• the pressure retention disc is configured with a cutout portion at least partially enveloping a wall portion of pressure relief port of the valve,
• wherein the housing is configured with a partition wall defining the fluid flow path extending between a bottom chamber configured with an inlet port and the top chamber configured with the outlet port, the bottom chamber accommodates a spring loaded float member axially displaceable between a closed position wherein a sealing head of the float member sealingly engages said inlet port of the fluid flow path, and a normally open position wherein the sealing head is disengaged from the inlet port, a pressure relief port extending between the bottom chamber and a valve outlet and being normally sealed by a sealing plunger biased into sealing engagement within the top chamber,
• wherein the pressure retention disc has a circle segment removed, substantially opposite the cutout portion, to thereby facilitate fast pressure relief.

A fuel valve, comprising:

• a valve housing accommodating a roll-over valve (ROV),
• an over-pressure relief valve (OPR), and
• a pressure retention valve (PRV), the PRV comprising
• a pressure retention disc that is substantially axially displaceable within a top chamber of the valve housing, between a normally closed position in which the pressure retention disc sealingly bears over an outlet port of a fluid flow path and an open position, the pressure retention disc is configured with a cutout portion at least partially enveloping a wall portion of pressure relief port of the valve,
• wherein the housing is configured with a partition wall defining the fluid flow path extending between a bottom chamber configured with an inlet port and the top chamber configured with the outlet port;
• the bottom chamber accommodates a spring loaded float member axially displaceable between a closed position wherein a sealing head of the float member sealingly engages said inlet port of the fluid flow path, and a normally open position wherein the sealing head is disengaged from the inlet port, a pressure relief port extending between the bottom chamber and a valve outlet and being normally sealed by a sealing plunger biased into sealing engagement within the top chamber,
• wherein a valve outlet of the over-pressure relief valve (OPR) and an outlet of the top chamber are discrete.