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Steam Line valve selection 2010-10-25
Conditions:A drip leg on a 300# - SS316L line where I have to select a couple of "block" valves (1" size),Previously the line was 2" and we had gate valves installed (Press 30barg, Temperature 300?C,
Trim No. and Leakage Rate in Globe / Gate valves 2010-10-25
Is there any relationship between trim no. specified in API 600 and leakage rate specified by DIN 3230-3 or any other standards in a globe or gate valve.
Standard bore for gate valves 2010-10-25
Is there a standard bore size for gate valves? For example a 2" gate valve, will have a xxxxx " opening?
Full Port Gate Valves 2010-10-25
For valves manufactured to API 600 (generally cast valves, flanged and butt-weld, like is made by Crane Valve)API 600, Sect. 5.3.3.1, Table 4, Minimum Port Diameters.
Difference betwn knife & slide Gate valves 2010-10-25
A knife gate valve is just what it implies. Knife gate valves were originally designed for the pulp and paper industry. Stringy pulp would impinge between the wedge and seat of a normal gate valve and
gate valves for water and swerage valves 2010-10-22
Once you assemble the valve you should run a hydro (shell) test to 150% of the MAWP ( 427 psi for a class 150 valve, 1110 psi for a class 300 valve, etc.)
10" - 16" Manual Gate Valves "Double Seat" Trim Characte 2010-10-22
The gate valve spec. is Class 300 lbs SS body BW Sch40S Man Operated. The design conditions are T=200F and P=180 psig, in water. The Cv required is 3100.
Needle Valves vs Gate Valves 2010-10-22
Apart from the construction and manner of operation of the closure member, are there any other differences between gate valves and needle valves
