API STD 603:2001 pdf download

API STD 603:2001 pdf download.Corrosion-Resistant, Bolted Bonnet Gate Valves—Flanged and Butt-Welding Ends.
5.2 BODY SEAT RINGS
When separate body seat rings are used, they shall be of the same nominal chemical composition as the shell (see 5.9.3).
5.3 BONNET GASKET
5.3.1 The bonnet flange gasket shall be a) corrugated or flat solid metal; b) corrugated or flat filled metal jacketed: c) metal ring joint: d) in Class 150 only, flexible graphite sheet reinforced with flat, tanged or corrugated metal insert: e) in round bonnets only, filled spiral wound metal: or f) other gasketing material specified in purchase order. A filled spiral wound metal gasket is acceptable provided the gasket incorporates a centering/compression control ring or the body-to- bonnet joint design provides inherent compression control to bring about the proper seating of the gasket.
5.3.2 The metallic portion of the gasket exposed to the service environment shall be made of a material with corrosion resistance at least equal to that of the shell. Filler material in spiral wound gaskets shall be flexible graphite unless specifled otherwise in purchase ordei
5.3.3 Lubricants, sealing compounds or grease shall not be used to facilitate the makeup of metal gasketed joints.
5.4 GATE
Solid- and flexible-wedge gates and discs for split wedge or double-disc gates shall he of the same nominal chemical composition as the shell (see 5.9.3).
5.5 YOKE
If the yoke is separate from the bonnet, it shall be made of carbon steel, or a material similar to that of the shell.
5.6 HANDWHEEL, CHAINWHEEL, AND NUT
5.6.1 Handwheels and chainwhecls shall be made of carbon steel, ductile iron, or malleable iron. Unless otherwise specified in the purchase order, they shall be a) cast or forged:
or b) fabricated from other carbon steel product forms that provide strength and toughness comparable to those provided by casting or forging. All handwheels shall be free of buffs and sharp edges.
5.6.2 The handwheel or chainwheel nut shall be made of a nonferrous copper alloy, a 13Cr steel, austenitic stainless steel, malleable iron, ductile iron, or carbon steel. Chains shall be made of steel.
7 Marking
Valves shall be marked in accordance with the requirements of ASME B 16.34, except that the nameplate may include the designation “API 603” in addition to the designation ASME B 16.34.
8 Shipment
8.1 PAINTING
Except for the handwheel or non-corrosion resistant material parts, valve parts shall not be painted. Paint color is optional.
8.2 OPENINGS
8.2.1 Valve end flanges and butt-welding ends shall be blanked to protect the gasket surfaces, welding ends, and valve internals during shipment and storage. The protective covers shall be made of wood, wood fiber, or plastic and shall be securely attached to the valve ends by bolting, steel straps, steel clips, or suitable friction locking devices. The design of the protective cover shall ensure that the valve cannot he installed without complete removal of the cover.
8.2.2 Tapped connections shall be fitted with fully tightened threaded plugs. Thread sealant shall not he used.
8.3 GATE POSITION AND LUBRICANT
Valves shall he shipped with the gates closed and with the stem threads lubricated.
8.4 STEM PACKING
Valves shall be shipped with the lantern ring (if specified) and packing installed and ready for operation. The remaining adjustment length of the packing gland at the time of shipment, with the gland tight, shall be greater than 1 .5 times the packing width specified in Table 5.
8.5 PACKAGING
8.5.1 If export packaging is not specified in the purchase order, valves may be shipped loose, palletized, or packed in boxes or crates.
8.5.2 If export packaging is specified in the purchase order, valves shall be shipped individually or collectively in wooden boxes or crates in a manner that will prevent shifting within the package.