Industry Overview
LPG valves are essential safety and flow-control components used in pressurized gas cylinders. They regulate the release and direction of gas, help prevent backflow, control pressure, and provide protection against leakage and excessive pressure. LPG cylinder valves are designed to withstand the pressure within cylinders as well as potential damage during transportation and storage. Protective caps or gas-tight plugs may be used to reduce the risk of leakage and prevent the entry of foreign matter.
The report covers two principal types of LPG cylinder valves for vapour service: self-closing, clip-on valves and hand wheel operated valves. Self-closing valves are commonly used for domestic cylinders and may incorporate excess flow limiters, anti-dirt tubes, and safety relief valves. Hand wheel operated valves are used in domestic and commercial applications for liquid filling, liquid service, and vapour service. The report also examines valve components, including the valve body, spindle, sealing face, stem, outlet, seat, seal, spring, and locking nut.
Manufacturing involves raw-material procurement and testing, brass billet cutting, heating, close-die forging, trimming, dip finishing, machining, quality control, and comprehensive testing. The project also addresses BIS specifications, process flow, market conditions, LPG demand and supply in India, regulatory influences, infrastructure development, plant layout, and suppliers of raw materials, machinery, and related equipment.
Cost Estimation
| Particulars | Value |
|---|---|
| Plant Capacity | 64,000 Nos/Day |
| Land & Building (2500 sq.mt.) | Rs. 1.84 Cr |
| Plant & Machinery | Rs. 2.25 Cr |
| Working Capital for 2 Months | Rs. 23.07 Cr |
| Total Capital Investment | Rs. 27.50 Cr |
| Rate of Return | 35% |
| Break Even Point | 37% |
Content Index
- INTRODUCTION
- TYPES OF VALVE
- 1. SELF-CLOSING, CLIP-ON VALVE
- PERFORMANCE REQUIREMENTS
- 2. HAND WHEEL OPERATED VALVE
- PARTS OF LPG VALVE
- B.I.S. SPECIFICATION
- PROCESS FLOW CHART
- MANUFACTURING PROCESS
- 1. PROCUREMENT OF RAW MATERIAL
- 2. TESTING OF RAW MATERIAL
- 3. CUTTING THE BRASS BILLET FOR REQUIRED SIZE FOR BALL AND VALE BODY
- 4. HEATING THE BRASS BILLET UP TO FORGING TEMP.
- 5. CLOSE-DIE FORGING PROCESS
- CLOSED DIE FORGING PROCESS OPERATIONS
- UPSETTING
- VIEW
- ADVANTAGES OF CLOSED DIE FORGING:
- HIGH STRENGTH
- LEAK RESISTANCE
- CLOSE TOLERANCES
- LOW OVERALL COST
- 6. TRIMMING AND CLIPPING
- 7. DIP FINISHING
- 8. MACHINING
- 9. QUALITY CONTROL
- ACTIVITIES
- INSPECTION OF PACKING AND DESPATCH.
- INSPECTION OF IN-COMING MATERIALS
- IN- PROCESS INSPECTION
- FINAL INSPECTION
- CONTROL OF MEASURING, INSPECTION TOOLS AND TEST EQUIPMENTS
- 10. TESTING
- (A) TESTING OF BRASS MATERIAL
- 1. TENSILE STRENGTH AND ELONGATION
- 2. IMPACT STRENGTH
- 3. STRESS CORROSION TEST
- 4. HYDROSTATIC TESTS
- (B) TESTING OF NON-METALIC MATERIAL
- (C) TESTING OF SPRING
- 1. PERMMANENT SET TEST
- TEST METHOD
- 2. RUST PROOFNESS TEST (NITRIC ACID IMMERSION TEST)
- (D) TESTING OF ASSEMBLE VALVE
- 1. DIMENSION TEST
- 2. PNEUMATIC TEST
- 3. TIGHTNESS OF JOINT PACKING (IN VALVE OUTLET) AND VALVE SPINDLE
- 4. TIGHTNESS OF VALVE SPINDLE AND VALVE HOUSING
- 5. TIGHTNESS OF JOINT PACKING AND HOUSING
- 6. CYCLE TEST
- 7. OPERATION TEST
- PROCEDURE
- 8. IMPACT TEST
- PROCEDURE
- 9. EXTERNAL LEAKAGE TEST
- 10. SEAT LEAKAGE TEST
- 11. ENDURANCE TEST
- 12. HYDROSTATIC STRENGTH TEST
- 11. MARKING
- MARKET OVERVIEW
- LPG IN INDIA
- PRADHAN MANTRI UJJWALA YOJANA
- PAHAL
- ALL STAKEHOLDERS BENEFIT FROM THE PAHAL SCHEME:
- GIVEITUP
- MAIN INDUSTRY
- MARKET GROWTH
- ANALYSIS OF IMPORT OF LPG VALVE
- TOTAL VALUE & VOLUME OF IMPORTS IN INDIA
- TOP SUPPLIERS
- TOP PORTS OF DISCHARGE
- ANALYSIS OF EXPORT OF LPG VALVE
- TOTAL VALUE & VOLUME OF EXPORTS IN INDIA
- TOP SUPPLIERS
- TOP PORTS OF DISCHARGE
- INDIAN LPG SCENARIO
- DEMAND & SUPPLY (INDIGENOUS PRODUCTION)
- INDIAN LPG SCENARIO
- PRODUCT PORTFOLIO
- INDIAN LPG SCENARIO
- VISION
- 1. INCREASE IN DOMESTIC LPG CONNECTIONS:
- 2. COMMON LPG KITCHEN‐MAKING LPG AFFORDABLE:
- RAJIV GANDHI GRAMIN LPG VITARAN YOJANA (LOW COST DISTRIBUTION MODEL):
- IMPROVING REACH OF LPG IN RURAL MARKET
- RURAL MARKET: DOMESTIC SEGMENT
- INDUSTRIAL & COMMERCIAL SECTOR:
- OPPORTUNITIES IN INDUSTRY
- REGULATORY INFLUENCE
- INDUSTRIAL/COMMERCIAL SEGMENT
- PRICING OF LPG
- INFRASTRUCTURE DEVELOPMENT
- TO SUMMARIZE
- PLANT LAYOUT
- MANUFACTURERS/SUPPLIERS OF LPG CYLINDER VALVE
- SUPPLIERS OF RAW MATERIALS
- SUPPLIERS OF BRASS BILLET
- SUPPLIERS OF NITRILE RUBBER SEAL
- SUPPLIERS OF PICKLING ACIDS
- SUPPLIERS OF VALVE SPRING
- SUPPLIERS OF PACKING MATERIALS
- CHINA SUPPLIER FOR COMPELETE PLANT
- SUPPLIERS OF PLANT AND MACHINERY
- SUPPLIERS OF BRASS BILLET CUTTING MACHINE
- SUPPLIERS OF CLOSE DIE HOT FORGING MACHINE
- SUPPLIERS OF FORGING DIES
- SUPPLIERS OF INDUCTION HEAING FURNACE
- SUPPLIERS OF CNC LATHE MACHINE
- SUPPLIERS OF CNC MACHINING CENTRE
- SUPPLIERS OF SHOT BLASTING MACHINE
- SUPPLIERS OF METAL TESTING MACHINE
- SUPPLIERS OF HARDNESS TESTING MACHINE
- SUPPLIERS OF NDT INSPECTION EQUIPMENT
- SUPPLIERS OF AIR POLLUTION CONTROL EQUIPMENTS
- SUPPLIERS OF AIR COMPRESSORS
- SUPPLIERS OF PLATFORM WEIGHING MACHINE
- SUPPLIERS OF FIRE FIGHTING EQUIPMENTS
Appendix
- 01. PLANT ECONOMICS
- 02. LAND & BUILDING
- 03. PLANT AND MACHINERY
- 04. OTHER FIXED ASSESTS
- 05. FIXED CAPITAL
- 06. RAW MATERIAL
- 07. SALARY AND WAGES
- 08. UTILITIES AND OVERHEADS
- 09. TOTAL WORKING CAPITAL
- 10. TOTAL CAPITAL INVESTMENT
- 11. COST OF PRODUCTION
- 12. TURN OVER/ANNUM
- 13. BREAK EVEN POINT
- 14. RESOURCES FOR FINANCE
- 15. INSTALMENT PAYABLE IN 5 YEARS
- 16. DEPRECIATION CHART FOR 5 YEARS
- 17. PROFIT ANALYSIS FOR 5 YEARS
- 18. PROJECTED BALANCE SHEET FOR (5 YEARS)
Frequently Asked Questions
An LPG cylinder valve is a pressure-containing and flow-control device fitted to an LPG cylinder. It controls the release of gas and helps maintain safe containment of the pressurized contents. Depending on the design, the valve may also incorporate pressure relief or excess flow protection. The report covers valves used for domestic and commercial cylinders, including self-closing clip-on valves and hand wheel operated valves. Proper valve operation, inspection, testing, and protection during storage and transportation are important for safe LPG handling.
The main types described in the report are self-closing, clip-on valves and hand wheel operated valves. Self-closing valves are commonly associated with domestic cylinders and can include excess flow limiters, anti-dirt tubes, and safety relief arrangements. Hand wheel operated valves are used for domestic and commercial cylinders and may be configured for liquid filling, liquid service, or vapour service. Their outlet connections can vary according to the intended application and applicable specifications.
LPG valve components use materials selected for strength, sealing performance, corrosion resistance, and compatibility with service conditions. The report identifies brass for the valve body, spindle, valve seat, and locking nut, stainless steel for the spring, and nitrile rubber or neoprene for the valve seal. The valve stem and outlet provide the necessary cylinder and service connections. Material testing is an important part of manufacturing quality control before components proceed to subsequent production stages.
LPG cylinder valve manufacturing involves a sequence of material preparation, forming, finishing, machining, assembly, inspection, and testing operations. The report describes procurement and testing of raw materials, brass billet cutting, heating to forging temperature, close-die forging, trimming and clipping, dip finishing, and machining. Quality control and testing follow these operations. The process also includes inspection of incoming materials, in-process inspection, final inspection, testing of components and assembled valves, marking, and inspection before packing and dispatch.
LPG cylinder valves undergo material, component, dimensional, pressure, leakage, and endurance testing. The report includes tensile strength and elongation, impact strength, stress corrosion, and hydrostatic tests for brass material, along with testing of non-metallic materials and springs. Assembled valves are subjected to dimensional, pneumatic, tightness, cycle, operation, impact, external leakage, seat leakage, endurance, and hydrostatic strength tests. These checks help verify mechanical integrity, sealing performance, operational reliability, and resistance to service-related stresses.
Close-die forging is used to produce strong and dimensionally controlled metal components suitable for demanding valve applications. In the report, the process is identified as part of LPG valve manufacturing and is associated with high strength, leak resistance, close tolerances, and low overall cost. The process involves heating the brass billet to the required forging temperature and forming it within dies, followed by trimming and other finishing operations. Proper process control is essential to achieve the required component geometry and quality.
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