Overview:
Forged steel globe valves are available in three cover designs. * The type is a bolt type bonnet. The valve designed according to this design form has a valve body and a valve cover connected by bolts and nuts, and a wound type gasket (made of 316 clip flexible graphite). Metal rings can also be used when customers have special requirements. The second design form is a welded bonnet. According to this design, the valve body and the bonnet are screwed and fully welded. Full penetration can also be used when the customer has special requirements. The third type is a pressure self-tightening valve cover. According to this design, the valve body and the valve cover are screwed, and the internal pressure is sealed by a self-sealing ring. Globe design structure and features
The shut-off valve is designed and manufactured in accordance with API602, BS5352 and ASME B16.34. Inspection and testing according to API 598, marked by MSS-SP-25. Adopt the following structure Full diameter or reduced diameter
Bright rod bracket type (OS&Y)
Self-centering pressure plate
Bolted, wound gasket sealed bonnet, threaded, fully welded sealed bonnet and threaded internal pressure self-tightening bonnet
Integral upper seal seat
The socket is in accordance with ASME B16.11
Threaded end (NPT) conforms to ANSI/ASME B1.20.1
The flap can be converted to a throttle type, a needle type, a ball type and a non-return type. Standard material schedule | Serial number | Part Name | CS to ASTM | AS to ASTM | SS to ASTM | | Type A105N | Type F22 | Type F304(L) | Type F316(L) | | 1 | Valve body | A105N | A182 F22 | A182 F304(L) | A182 F316(L) | | 2 | Valve flap | A276 420 | A276 F22 | A276 304(L) | A276 F316(L) | | 3 | Valve stem | A182 F6a | A182 | A182 F304(L) | A182 F316(L) | | 4 | Gasket | 316 clip flexible graphite | 316 clip PTFE | | 5 | cap | A105N | A182 F22 | A182/F304(L) | A182/F316(L) | | 6 | Bonnet bolt | A193 B7 | A193 B16 | A193 B8 | A193 B8M | | 7 | Cylindrical pin | A276 420 | A276 304 | | 8 | Packing sleeve | A276 410 | A182 F304(L) | A182 F316(L) | | 9 | Joint bolt | A193 B7 | A193 B16 | A193 B8 | A193 B8M | | 10 | Packing plate | A105 | F182 F304 | | 11 | Nut | A194 2H | A194 4 | A194 8 | A194 8M | | 12 | Stem nut | A276 410 | | 13 | Nut | A194 2H | A194 4 | A194 8 | A194 8M | | 14 | Nameplate | SS | | 15 | Hand wheel | A197 | | 16 | filler | Flexible graphite | PTFE | | Applicable medium | Water, steam, oil, etc. | Water, steam, oil, etc. | Nitric acid, acetic acid, etc. | | proper temperature | -29°C～425°C | -29°C～550°C | -29°C～200°C |
Note: Other materials required by the customer are also available. The sealing surface material pairing is determined by the customer specified internal code.
CS=carbon steel; AS=alloy steel; SS=stainless steel; Connection size (mm) and weight (Kg) | NPS | Reduced diameter | 3/8 | 1/2 | 3/4 | 1 | 1 1 /4 | 1 1 /2 | 2 | / | | Full path | / | 3 /8 | 1 /2 | 3 / 4 | 1 | 1 1 /4 | 1 1 /2 | 2 | | L | 79 | 79 | 92 | 111 | 120 | 152 | 172 | 200 | | H (open) | 166 | 166 | 171 | 207 | 240 | 258 | 330 | 355 | | W | 100 | 100 | 100 | 125 | 160 | 160 | 180 | 200 | | weight | Bolt type | 1.9 | 1.9 | 2.1 | 3.5 | 6.0 | 7.5 | 11.4 | 14.6 | | Welded | 1.7 | 1.7 | 1.9 | 3.3 | 5.2 | 6.8 | 10.6 | 13.8 |
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