Page 40 - Applied Process Design for Chemical and Petrochemical Plants Volume I

28 Applied Process Design for Chemical and Petrochemical Plants

PIPING MATERIAL SPECIFICATIONS (continued)
Alternate Process Service

PressJTernp. Limits: 1'75 PSIG/-20 to 150°F 125 PSIG/35O0F
Corrosion Allowance: 0.05 inches
MATERIAL OR
ITEM RATING & TYPE MANUFACTURER NOTE
SIZE INCHES
PIPE
2 and smaller Sch. 40 Seamless Carbon steel ASTM A-53, Gr. B, T&C
3 through 6 Sch. 40 ERW Carbon steel ASTM A-53, Gr. B, beveled
8 through 12 Sch. 20 ERW Carbon steel ASTM A-53, Gr. B, beveled
14 through 20 Sch. 10 ERW Carbon steel ASTM A-53, Gr. B, beveled
FITTINGS
2 and smaller 150# Screwed Mal. iron ASTM A-197
3 and larger Buttweld-Sch . to Carbon steel ASTM A-234, Gr.
match pipe WPB.
FLANGES
2 and smaller 150# RF or FF Carbon steel ASTM A-105
Screwed
3 and larger 150# RF or FF Slip- Carbon steel ASTM A-105
on or weld neck
ORIFICE FLANGES
1 and larger 300# RF Weld Neck Carbon steel ASTM A-105
UNIONS
2 and smaller 300# Screwed Mal. iron, ground joint,
brass to iron seats
ASTM A-197
BRANCH CONN.
2 and smaller 3000# Threadolet Forged steel ASTM A-105
3 and larger Std. Wt. Weldolet Forged steel ASTM A-105
REDUCERS
2 and smaller 150# Screwed Mal. iron ASTM A-197
Sch. 80 Swage Carbon steel ASTM A-234,
Gr. WPB
3 and larger Buttweld-Sch. to Carbon steel ASTM A-234,
match pipe Gr. WPB
STAINERS
2 and smaller 150 screwed Bronze with 30 mesh monel screen - Mueller #351 or equal.
GASKETS
All sizes % in. ring Compressed
All sizes X in. full face Compressed
BOLTING
All sizes Machine bolts w/ Sq. hd. ASTM A-307, Gr.B.
hex nuts
VALVES (Alternate, for different process liquid/vapor service)
2 and smaller 150# screwed gate Bronze, ISRS, union bonnet, Powell 2714 or equal
3 or larger 125# FF gate IBBM, OS&X bolted bonnet, Powell 1793 or equal
2 and smaller 300# screwed ball CS body, Teflon seats & seals CS ball, Hills McCanna Fig. S302-CSTCS
3 and larger 150# RF ball CS body, Teflon seats & seals CS ball, Hills McCanna Fig. S151-CSTCS
3 to 6 150# butterfly Cast iron body, Buna N seat &
w/locking handle seals, Al-Brz. disc, 316 SS stem. Keystone Fig. 100/122 or equal

Figure 1-26 (continued). Partial presentation of piping specifications for a specific process service. By permission, Borden Chemicals and
Plastics, Operating Limited partnership.