This is useful for ABC 4kg,6 kg, and 9 kg and this is also used for 9-liter foam type and 9 kg dcp stored pressure type fire extinguisher. With Pressure Guage. With O ring. With Sefty Pin. It is a Strong Product For Fire Extinguisher.  The pressure gauge on the fire extinguisher valve helps to monitor the pressure inside the extinguisher. This allows users to know when the pressure is low and when it needs to be recharged. With a fire extinguisher valve with a pressure gauge, users can quickly respond to fires by checking the pressure gauge to ensure that the extinguisher is fully charged and ready for use. The pressure gauge ensures that the fire extinguisher is in good working condition and ready to use, which increases safety in case of a fire emergency.