On-shore pressure helmet

Abstract

A valve includes an inlet to allow gas to enter the valve; an overpressure system to provide an overpressure; and a reclaim outlet to allow gas from the valve to exit the valve. Optionally, the reclaim outlet can connect to a reclaim system or a dump system which can be used for recovering the gas flowing through the valve.

1 . A valve comprising:
 an inlet to allow gas to enter the valve;   an overpressure system to provide an overpressure; and   a reclaim outlet to allow gas from the valve to exit the valve.   
     
     
         2 . The valve of  claim 1 , and further comprising:
 a local atmosphere outlet to allow gas from the valve to exit to a local atmosphere; and   a switch to control whether gas entering the valve exits through the reclaim outlet or through the local atmosphere outlet.   
     
     
         3 . The valve of  claim 1 , wherein the overpressure system comprises a spring. 
     
     
         4 . The valve of  claim 2 , wherein the switch is activated manually. 
     
     
         5 . The valve of any  claim 2 , wherein the switch is located on an outside of the valve. 
     
     
         6 . The valve of  claim 1 , wherein the overpressure system provides an overpressure of about 0.5 cm to about 8 cm water height. 
     
     
         7 . The valve of  claim 1 , wherein the overpressure system provides an overpressure of about 0.6 cm to about 5 cm water height. 
     
     
         8 . The valve of  claim 1 , wherein the overpressure system provides an overpressure of about 2 cm water height. 
     
     
         9 . The valve of  claim 1 , and further comprising a valve housing. 
     
     
         10 . The valve of  claim 1 , and further comprising a connection portion to connect the valve to a helmet. 
     
     
         11 . The valve of  claim 10 , wherein the connection portion comprises threads. 
     
     
         12 . The valve of  claim 1 , wherein the reclaim outlet connects to a reclaim system or a dump system. 
     
     
         13 . An overpressure helmet comprising a valve comprising:
 an inlet to allow gas to enter the valve;   an overpressure system to provide an overpressure;   a first outlet connecting to a reclaim system or a dump system;   a second outlet connecting to a local atmosphere; and   a switch to guide gas in the valve to the first outlet or the second outlet.   
     
     
         14 . A method of manufacturing a reclaim valve, the method comprising:
 forming a valve with an inlet to allow gas to enter the valve and a reclaim outlet to allow gas in the valve to exit the valve; and   forming an overpressure system within the valve.   
     
     
         15 . The method of  claim 14 , and further comprising:
 forming a local atmosphere outlet to allow gas from the valve to exit to a local atmosphere; and   forming a switch to control whether gas in the valve exits through the reclaim outlet or through the local atmosphere outlet.   
     
     
         16 . The method of  claim 14 , wherein the gas exits the reclaim outlet into a reclaim system or a dump system.