... transmission. YB600/30, YB900/25 and YB1100 double-acting reciprocating duplex mud pump is used in mineral, water well and engineering ... machinery or diesel engine. BW600/30, BW1100 mud pump are adopted way of gear-change and different size ... for different works .Technical ParameterModelSpecificationYB600/30YB900/25YB1100Stroke(mm)180180240Stroke speed(s/m)808070,55Limer dia(mm)90, 110, 130150150, ...