model hgpw2500 displacement 18.1 cu. in fuel tank cap 92. us gallons lube oil cap 37.17 ounces max pressure 3000psi cont pressure 2500psi flow rate 3.69us gpm weight 155lbs.dry model hg168f-2 cont.outp(hp) 6.5 engine speed(rpm) 3600 displacement(cc) 194 net weight(kg) 34 dimensions(lxwxh)(mm) 655x470x535 model hdpw2500 displacement 18 .1 cu. in fuel tank cap 92 us gallons lube oil cap 37. 17 ounces max pressure 3000psl cont pressure 2500psl flow rate 3.69 us gpm weight 155 lbs. dry model hd178fa(e) cont.output(hp) 5.5 engine speed(rmp) 3600 displacement(cc) 296 net weight(kg) 50/56(e) dimensions(lxwxh)(mm) 655x470x535 have epa,iso9001,ce,gs certificates.give me your email i will send our catalog to you email : lit_power@yahoo.com.cn ,open it everyday. website: www.huacen.cn http://xuparkk.spaces.msn.com/?_c02_owner=1 msn: xupark@hotmail.com add me,our catalog and photos of our products in my share space of msn.click my msn you will find yahoo messenger id: xupark@yahoo.com.cn