''NO REPLACEMENT OR ALTERNATE VALVE''
                                     
                                    At this time, there is NO replacement 
                                    for the temperature control valve, 
                                    and we should continue using 
                                    the V47 described here.
                                     
                                    I keep looking for a decent replacement;
                                     
                                    BUT THIS IS A VERY SENSITIVE 
                                    CONSTANT EQUILBRIUM TYPE VALVE 
                                     
                                    I am working on a PWM solenoid valve.
                                     The PMW valve will do just fine 
                                    at a fraction of the cost of the present V47,
                                     but it needs some finishing.
                                    and I will be running late on all other projects.
                                    I sincerely apoligise for this twist of events, 
                                    but once the website is completed, 
                                    things will all fall into place.