Metal seated valve ball and seat is the critical parts of metal seated ball valves. It is designed for extreme high pressure, temperature and abrasive conditions, such as cutting off or connecting solid granules, melted slurry, coal power, scalding cinder, steam water or other liquid etc. Therefore it has the feature of anti-static construction, extra tough coating, full bore and reduced bore, fire safe feature complying API607, and reliable sealing performance.
Metal Seat and Ball are made from base metals coated usually with hard chrome, tungsten carbide, stellite and Ni60. We have both thermal spray coating and cold spray coating available such as Laser Cladding, HVOF (High Velocity Oxy Flame)Coating, Oxy-acetylene flame spray, Plasma Spray process.
Ball and Seat Lapping
For metal seated ball and seat, we must provide complete valve ball+seat kits solution to customers because the ball and seat need lapping before being sent to serve. Over the years, We have developed a unique ball lapping technology for the coated ball and seat. Through simultaneous same and different direction of rotation, the ball and the seat result in perfect roundness and fitness, achieving “Zero Leakage”
Metal Seated Valve Ball Specification
Pressure Rating:Class 150LB-2500LB
Nominal Size:3/4” ~ 30”
Hardness:HV 940-1100/HRC 68-72
Porosity:≦1%
Tensile strength"(≥70Mpa)
Heat Resistance"980℃
Leakage:Zero
Basic Materials:ASTM A105(N), A350 LF2, A182 F304(L), A182 F316(L), A182 F6A, A182 F51, A182 F53, A564 630(17-4PH), Monel, Alloy etc.,
Coating:
Thermal Spray and Cold Spray;
Ni60,Tungsten Carbide, Chrome Carbide;
Stellite 6# 12# 20#, Inconel, etc