Valves as machine components; Parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, globe valves, choke and manifold industrial pumps, pump and valve parts, pipe fittings and flanges; Valves being parts of machines operated pneumatically and by air; Back pressure valves as parts of machines; Proportional flow valves as parts of machines; Valves being engine parts for introducing fuel-air mixtures into the combustion chambers of internal combustion engines; Thermostatic control valves for machines; Emission reduction units for motors and engines, namely, EGR valves.

'air':43,66 'back':44 'ball':13 'chamber':71 'check':15 'choke':21 'combust':70,74 'compon':4 'control':77 'egr':89 'emiss':81 'engin':60,75,87 'fit':31 'flang':33 'flow':52 'fuel':65 'fuel-air':64 'gate':11 'globe':19 'industri':24 'intern':73 'introduc':63 'machin':3,9,38,50,57,80 'manifold':23 'mixtur':67 'motor':85 'name':10,88 'oilfield':7 'oper':39 'part':5,29,36,48,55,61 'pipe':30 'plug':17 'pneumat':40 'pressur':45 'proport':51 'pump':25,26 'reduct':82 'thermostat':76 'unit':83 'valv':1,12,14,16,18,20,28,34,46,53,58,78,90 'wellhead':8

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