Deposit type Boundary grade ( WO 3 % ) Industrial grade ( WO 3 % ) Available thickness ( m ) Stone removal thickness ( m ) Jiangxi Dajishan Quartz         Large vein type tungsten deposit 0.1 0.15 0.8 　 Boundary meter percentage Boundary meter percentage 0.08 0.12 Jiangxi Pangushan Quartz          Large vein type tungsten deposit 0.08 0.12 0.8 　 Boundary meter percentage 0.05 Low meter percentage 0.08 Jiangxi Shangping quartz fine vein zone type tungsten deposit 0.1 0.15 1 　 Quartz fine vein disseminated tungsten deposit in Luoluo Pit, Fujian 0.1 0.15 2 5 Guangdong Lianhuashan quartz fine vein disseminated tungsten deposit 0.12 0.18 1 2 Hunan Shizhuyuan fine quartz (net) veins - greisenization - skarn tungsten multi-metal deposit 0.1 0.15 2 4 Associated component Mo 0.01 0.04 　 　 Bi 0.04 0.07
Ball
valves are usually used for shutting off or connecting the medium flow.
The
maximum permissible leakage of the valve with non-metal elastic seals is zero,
and that of the Ball Valve with meal seals is 0.1xDNmm3/s.
Therefore, acceptable valves with metal seals possibly have slight
leakage. Hence, in the applications where there must not be any leakage,especially at the pipeline
ends, ball valves with soft seals should be used.
Nominal pressure of brass
ball valve is 1.6MPa, 2.0MPa and 2.5MPa. When the ball valve is used for
saturated steam, the pressure of the saturated steam should be ≤0.6MPa.used.
Ball Valve Ball Valve,Brass Ball Valve,Brass Gas Ball Valve,Mini Brass Ball Valve Ningbo Jiekelong Precision Manufacturing Co., Ltd. , http://www.jklvalve.com