API 600:2009 pdf download

API 600:2009 pdf download.Steel Gate Valves- -Flanged and Butt-welding Ends, Bolted Bonnets.
5.10.4 Bolting with diameters I in. (25 mm) and smaler shall have coarse (UNC) threads or the most nearly corresponding metric threads, Bolting with diameters larger than 1 in. (25 mm) shall be 8-thread series (BUN) or the most nearly corresponding metric threads. Bolt threads shall be Class 2A and nut threads shall be Class 28, m accordance with ASME Bi .1. suds used for gland bolting shall use a Class 5 interference fit conforming to ASME 81.12. When metric bolting is used metric bolt threads shall be tolerance Class 6g and nuts tolerance Class 6H in accordance with ASME B1.13M,
5.11 Operation
5.11.1 Unless otherwise specified by the purchaser, the valve shall be supplied with a direct operated handwheel that opens the valve when turned in a counter-clockwise direction.
5.11.2 The handwheel shall be a spoke-nm type with a maximum of six spokes and shall be free from burrs and sharp edges. Unless otherwise specified, the handwheel shall be a one-piece casting or forging or a multi-piece carbon steel fabrication that includes other carbon steel product forms. Fabricated handwheels shall have strength and toughness characteristics comparable to that of handwheels made as one-piece castings or forgings.
5.11.3 The handwheel shall be marked with the word ‘OPEN and an arrow pointing in the direction of opening, except when the handwtieel size makes such marking impractical.
5.11.4 The handwheel shall be retained on the stem nut by a threaded handwheel nut.
5.11.5 it operation by a chain wheel, gearbox or power actuator is to be added to the valve, the purchaser shall specify the following, as applicable:
— br chainwheel operation, the dimension from the centerline of the valve stem to the bottom of the chain loop;
— spur or bevel gear and the position of geanrig handwheel relative to the pape axis;
— electric, hydraulic, pneumatic or other actuator type;
— maximum service temperature and pressure differential across the valve disc;
— power supply attributes for power actuators.
5.11.6 Valve-to-gear-box or power actuator flange mating dimensions shall be according to ISO 5210 or shall comply with the purchaser’s specifications.
5.12 Bypasses and Other Auxiliary Connections
Auxiliary connections to the body and/or bonnet, such as drains shall be furnished only if specified on the purchase order. The design and construction of the joint and the piping of auxiliary connections shall conform to the requirements of ASME B16.34. When required for valve NPS 2 or larger, auxiliary connections shall be sized and located as specified in ASME B16.34. The size and location of auxiliary connections shall be indicated on the purchase order.
6 Materials
6.1 Materials Other Than Trim Materials
Materials for body, bonnet, and valve parts other than trim items shall be selected from Table 7.
9.2 OpenIngs
9.2.1 Valve end flanges and welding ends shad be blanked to protect the gasket surfaces or welding ends and the valve internals during shipment and stolage. The protective covers shall be made of wood, wood fiber, plastic, or metal and shall be securely attaded to the valve ends by bolts, steel, straps, steel clips, or suitable friction-locking devices, Covers shall be designed so that the valve cannot be installed without removal of protective cover.
9.2.2 Tapped connections shall be fitted with fully tightened and sealed threaded plugs. The material used for plugs for tapped connections shall have the same nominal chemical composition as the shell material (see 5.12).
9.3 Gate Position
The valve shall be shipped with the gate closed.
9.4 Stem Packing
The valve shall be shipped with the lantern ring, Il speafled, and the packing installed. The remaining adjustment length of the packing gland at the time o( shipment, with the gland tight, shall be greater than one-and-one half times the packing width specified in Table 6.
9.5 Packaging
9.5.1 Unless export packaging is specified in the purchase order, valves may be shipped loose, palletized, or packed in a box or crate.
9.5.2 When export packaging is specified in the purchase order, valves shall be shipped individually or collectively in wooden boxes or orates in a manner that will prevent shifting within the package.