An Altitude Valve is a mechanically operated control that relies on a differential of pressure between inlet and outlet to assume a level of water, and control its flow when the supply pressure becomes much higher than the head developed by the full reservoir or storage tank.
 
Name : Altitude Valve
Brand : VALMATIC
Model : M6127H-1 / M127H-1

Size Range	:	32mm to 600mm (1 ¼'' to 24'')
Body Material	:	Ductile Iron, Cast Bronze
Diaphragm	:	Nylon Reinforces Buna-N Rubber
Temperature	:	Maximum 100°C (180°C optional)
Working Pressure	:	Up to 250 P.S.I (Standard)
Temperature	:	Up to 90°C
Connection	:	Threaded End, Flanged End to PN16, PN25, ANSI B16.5

 Features

• *Only three major components - Cover, Stem Assembly and Body
• *100% fused epoxy coating internally and externally, prevent mineral build-up and rust in the basic valve body
• *One piece flat diaphragm designed, absolute no friction to the rubber diaphragm against the basic valve.
• *Simplified maintenance, no special tools and skill required