An assembly chart for a simple gate valve is given in figure 1.1, part list and assembly information for the gate valve and processing information are given in figure 1.2. The following information is also available:

a. Casting are manufactured in-house.

b. Bar stock, nuts, screws, packaging can be obtained from a local supplier.

c. The design engineer specified that body bushing and handle be made of cast bronze and the cap and stem of the valve be machined from standard brass bar stock.

d. The following need to be fabricated: the bushing, stem, cap, handle.

e. Inspection is required for all fabricated parts prior to delivery to final assembly. Construct an operation process chart, precedence diagram and rout sheets.

An assembly chart for a simple gate valve is given in figure 1.1, part list and assembly information for the gate valve and processing information are given in figure 1.2. The following information is also available:

a. Casting are manufactured in-house.

b. Bar stock, nuts, screws, packaging can be obtained from a local supplier.

c. The design engineer specified that body bushing and handle be made of cast bronze and the cap and stem of the valve be machined from standard brass bar stock.

d. The following need to be fabricated: the bushing, stem, cap, handle.

e. Inspection is required for all fabricated parts prior to delivery to final assembly. Construct an operation process chart, precedence diagram and rout sheets.

Body Bushing Assemble stem and bushing to body Stem Packing (SAL 43 Assemble Cap Cap Handle Assemble Handle Nut Final Inspection Figure 1.1 Assembly Chart Parts List Part No 001 002 Parts Body Bushing Stem Fiber packing Cap Handle Nut 003 004 005 006 007 Cast bronze Cast bronne 3/8 in bar Purchased port 3/4 in heterock Cast bronze Purchased art an 001 005-1 001-2 001- Meine COD 02-1 - 000 0021 Cie 006- Assembly Operations Operation Machine No 1 N- Final assembly Clean Inspect pressure testi Pack in boxes Bench Solvent tank Water test stand Bench 060 120 3 Figure 1.21 Part list and assembly operations 3 Assembly Operations Operation Machine No. 1 2 3 4 Final assembly Clean Inspect (pressure test) Pack in boxes Bench Solvent tank Water test stand Bench Standard time (min/part) 2.00 0.60 1.20 0.12 Figure 1.2: Part list and assembly operations Parts List Part No. 001 002 003 Parts Body Bushing Stem Fiber packing Cap Handle Nut Material Cast bronze Cast bronze 3/8 in. bar stock (Purchased part) 3/4 in. hex bar stock Cast bronze (Purchased part) 004 005 006 007 Part No. 001 002 Fabrication Operations Operation No. Standard time (min/part) 001-1 Cast Bench mold 1.50 001-2 Clean Tumble barrel 0.40 001-3 Machine-thread and Turret lathe 2.40 face three surfaces 002-1 Cast Bench mold 0.75 002-2 Clean Tumble barrel 0.20 002-3 Machine all i.d. Turret lathe 1.00 and o.d. 003-1 Machine all surfaces Automatic screw 0.30 and cut off machine 005-1 Machine all surfaces Automatic screw 0.12 machine 006-1 Cast Bench mold 1.20 006-2 Clean Tumble barrel 0.30 006-3 Machine two surfaces 0.75 Turret lathe 006-4 Broach square hole Broach 0.75 Figure 1.2: Processing information 003 005 006 Body Bushing Assemble stem and bushing to body Stem Packing (SAL 43 Assemble Cap Cap Handle Assemble Handle Nut Final Inspection Figure 1.1 Assembly Chart Parts List Part No 001 002 Parts Body Bushing Stem Fiber packing Cap Handle Nut 003 004 005 006 007 Cast bronze Cast bronne 3/8 in bar Purchased port 3/4 in heterock Cast bronze Purchased art an 001 005-1 001-2 001- Meine COD 02-1 - 000 0021 Cie 006- Assembly Operations Operation Machine No 1 N- Final assembly Clean Inspect pressure testi Pack in boxes Bench Solvent tank Water test stand Bench 060 120 3 Figure 1.21 Part list and assembly operations 3 Assembly Operations Operation Machine No. 1 2 3 4 Final assembly Clean Inspect (pressure test) Pack in boxes Bench Solvent tank Water test stand Bench Standard time (min/part) 2.00 0.60 1.20 0.12 Figure 1.2: Part list and assembly operations Parts List Part No. 001 002 003 Parts Body Bushing Stem Fiber packing Cap Handle Nut Material Cast bronze Cast bronze 3/8 in. bar stock (Purchased part) 3/4 in. hex bar stock Cast bronze (Purchased part) 004 005 006 007 Part No. 001 002 Fabrication Operations Operation No. Standard time (min/part) 001-1 Cast Bench mold 1.50 001-2 Clean Tumble barrel 0.40 001-3 Machine-thread and Turret lathe 2.40 face three surfaces 002-1 Cast Bench mold 0.75 002-2 Clean Tumble barrel 0.20 002-3 Machine all i.d. Turret lathe 1.00 and o.d. 003-1 Machine all surfaces Automatic screw 0.30 and cut off machine 005-1 Machine all surfaces Automatic screw 0.12 machine 006-1 Cast Bench mold 1.20 006-2 Clean Tumble barrel 0.30 006-3 Machine two surfaces 0.75 Turret lathe 006-4 Broach square hole Broach 0.75 Figure 1.2: Processing information 003 005 006