Valve assembly refers to the valve body, valve seats, valve rubber composition of suite, Valve assembly on the drilling mud pump hydraulic the important constituent, Have the effect of make mud through one-way, At present there are 6 and 7, common，One for each Yu Qingzhou 1300 pump (SL3NB - 1300 a), LanShi 1300 pump (3 nb - 1300), etc., And API6 number, API7 number, They apply to the F - 1300, the F - 1600 pump, In general need six sets of a mud pump valve assembly, Divided into SanJin out, Also have some fracturing car installation.That is more smaller, used to call it 5 on the market, manufacturer of valve assembly is very much, quality is uneven, I know a shanxibaoji , Munger  International Petroleum  Equipment Co,.ltd，Online search, We specialized in supplying highly quality Chinese drilling rig parts and mud pump parts and expendables for almost all popular mud pumps used worldwide, including Emsco F series ,Garden Denver, National Oilwell, Wirth, IDECO, Honghua, BOMCO, Lanzhou pump, QZ series, Russian Pump(8T-650,UNB&UNBT series).