GATE VALVES,NUMBER OF ROUNDS CLOSED
GATE VALVES,NUMBER OF ROUNDS CLOSED
(OP)
ACCORDING TO ALL THE INFORMATION I HAVE FOUND, A 24" NRS SPLIT WEDGE GATE VALVE ,150# CLASS VALVE SHOULD OPEN 75 ROUNDS (3X THE VALVE SIZE PLUS 3),I HAVE A H+M GATE VALVE THAT WAS INSTALLED AROUND 1965 THAT ONLY OPENS 51 ROUNDS (2X + 3),I KNOW THAT THE VALVE IS IN GOOD WORKING SHAPE BECAUSE WE JUST PULLED IT APART AND LOOKED AT IT.DOES ANYONE HAVE ANY IDEA WHY THIS VALVE WOULD BE ANY DIFFERENT.





RE: GATE VALVES,NUMBER OF ROUNDS CLOSED
RE: GATE VALVES,NUMBER OF ROUNDS CLOSED
So the number of rounds to open various sizes and classes of valves should be a function of the amount of effort required rather than a set number of turns. Hence the use of gear operators on larger size valves.