Page 41 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

26 Applied Process Design for Chemical and Petrochemical Plants

V-NO.
MATL.
SIZES CHECK VALVES
CONN. DESCRIPTION
V-11 PISTON LIIT, PRES. SEAL ROCKWELL ROCKWELL
RATING: 600 psig@ 975°F EDWARDS EDWARDS
IX Cr. BODY: C.A.S. A-217 GR WC6 690 694
2;1"-14" STEM: WC6 WC6
600# SEATS: Integral Ste! Alloy W'-6" 8"-14"
RF DISC: Body-Guided
V-12 HORIZ. PISTON, WELD CAP ROCKWELL VOGT
RATING: 2500 psig @ 650°F ED\NARDS SW-6933
cs BODY: C.S. A-216 Gr. WCB 6674
W'-2" STEM:
2500# SEATS: Integral, Stellited l1"-2W' W'-2"
SW DISC:

V-13 HORIZ. PISTON, PRESS. SEAL ROCK.\-VELL POWELL
RATING: 2500@ 650°F EDWARDS 125065 WE
cs BODY: C.S.A.-216 Gr. WCB 3994Y
2W'-12" STEM: WCB
2500# SEATS: Integral, Stellited 2}!:"-12" 2�"-10"
BW DISC: Piston Stellited (5) (6)
v Add additional valves of all types
as needed for project

NOTE: 1. Vertical columns indicate valves acceptable as equivalent to the specification description.
2. V-11 is a typical valve code to use on flowsheets and piping drawings.
Figure 1-25. Typical valve codes and specifications. By permission, Borden Chemicals and Plastics Operating Limited Partnership.

are required. (Also see Figures 1-8 and 1-9.) By complete- ORFM -6, Orifice flanges and plate for Recording
ly defining the valve specification in a separate specifica- Flow Meter No. 6
tion book the various valves-gate, globe, butterfly, plug, OTrRFC-1, Orifice flanges and plate used with
flanged end, screwed end, welding end--can be identified Transmitter for Recording Flow Con-
for all persons involved on a project, including piping troller No. 1
engineers and field erection contractors.
TrRFC -lF, Flow Transmitter for Recording Flow
Figure l-20C summarizes a system for representing pip- controller No. 1
ing components on the flow sheets. IPC-8, Indicating Pressure Controller No. 8

The instrument symbols of Table 1-4 and Figures 1-23B IFC-6, Indicating Flow Controller No. 6
and C are representative of the types developed by the IFM-2, Indicating Flow Meter No. 2
Instrument Society of America and some companies.
RLC- , Recording Level Controller
Some other designation systems indicate the recording RLM - , Recording Level Meter
or indicating function in front of rather than behind the
instrument function. For example: ILC - , Indicating Level Controller
LC - , Level Controller
RTC-1, Recording Temperature Controller No. 1 PC - , Pressure Controller
VRTC -1, Control Valve for Recording Tempera-
ture Controller No. 1 Control valves carry the same designation as the instru-
RFM-6, Recording Flow Meter No. 6 ment to which they are connected.