Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51 Page 52 Page 53 Page 54 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60 Page 61 Page 62 Page 63 Page 64 Page 65 Page 66 Page 67 Page 68 Page 69 Page 70 Page 71 Page 72 Page 73 Page 74 Page 75 Page 76 Page 77 Page 78 Page 79 Page 80 Page 81 Page 82 Page 83 Page 84 Page 85 Page 86 Page 87 Page 88 Page 89 Page 90 Page 91 Page 92 Page 93 Page 94 Page 95 Page 96 Page 97 Page 98 Page 99 Page 100 Page 101 Page 102 Page 103 Page 104 Page 105 Page 106 Page 107 Page 108PAGE 71 MODEL M & HM RUGGED & DEPENDABLE PROVEN DESIGN The APV API6A valve is designed for the primary control of high pressure gas and fluid. The valve is a through-conduit type allowing positive closure of the full bore. In both the open/close positions the expanding gate is forced into contact with the seats by the wedging force derived from the design of the gate. The gate assembly design is a two-piece design with the stem to gate interface on the gate major segment sub-assembly. The gate assembly is bored with the port size, and milled with the ā€œVā€ surface to accommodate the minor segment sub-assembly. The gate assembly design uses the ā€œVā€ to force the two segments out and into contact with the seats as shown in the illustration. The lateral travel generated with this design promotes a complete seal between the seat and gate. This feature promotes the use of this valve in all pressure ranges when a positive seal is required with no pressure assisting the closure. FIELD PROVEN DESIGN FEATURES INTEGRAL CAST STEEL BODY of the valve meets or exceed the API Standard 6A and NACE MR-01-75 requirements. Forged body also available. BONNET on the valve uses standard field service tools for valve maintenance. EXTERNAL GREASE FITTING to ensure easy access for lubrication. COATED STEMS for reduced friction. High Efficiency Thrust Bearings are used to reduce torque to a minimum. SECONDARY PLASTIC packing injection port for emergency pack-off. AUXILIARY OPERATORS are easily installed. EXPANDING GATE ASSEMBLY ensures a positive seal. The M and HM series valve offer a dual sealing design with an elastomeric low pressure seal in addition to metal-to-metal high pressure sealing. All metal to metal stellite faced seating also available. Floating seated style with pressure energised solid slab is also available (Type FC). SEAT design eliminates the seat from being displaced from the pocket by high pressure. The seats are field replaceable without moving the valves from the tree. TRIMS AVAILABLE for eight standard service environ- ments. Special trims are available on request from APV to meet the most demanding environments. CONCEPT OF EXPANDING GATE (MODEL M) (Solid Floating Gate also Available type FC) MODEL M 11 API6A GATE VALVES