Plastic Safety Valve Manufacturers for Acid Alkali Chemical Solvent Service – PP/PVDF
Featuring PP (polypropylene) and PVDF (polyvinylidene fluoride) construction, these valves provide exceptional chemical resistance and reliable pressure relief in demanding chemical processing, water treatment, and laboratory applications. This article provides essential information on manufacturers and key selection parameters for PP/PVDF plastic safety valves for corrosive chemical service.The main safety valve product names of China safety valve Network include:A69Y Main Safety Valve(W Series) Welding Safety Valve,Anti-sulfur Spring Type Safety Valve,ANSI Bellows Safety Valve,Air, Gas Valve,Ammonia-used Safety Valve,A28X Air Compressor Safety Valve,AD Safety Valve Muffler,Bellows Spring Fall Lift SafetyValve,Built-in Safety Valve,Butterfly Spring Type Safety Valve.
Why PP and PVDF for Chemical Solvent Service
PP and PVDF offer several critical advantages for aggressive chemical handling. PP provides excellent resistance to acids, alkalis, and organic solvents with working temperatures up to +70°C . PVDF offers superior chemical resistance covering pH range 1-14, maintaining sealing performance even at 93°C for extended service . Both materials are inherently corrosion-resistant, eliminating metallic contamination risks in sensitive chemical processes.
Leading Manufacturers
Zhejiang Fengquan Valve Co., Ltd. manufactures PP, PVDF, UPVC, and CPHC safety valves with DN15-DN65 sizes and pressure range up to 1.0MPa. Their valves feature PTFE+rubber composite diaphragms suitable for nearly all corrosive fluids, with connection options including socket, flange, and threaded ends . Longmeng (Shanghai Longmeng Machinery) offers PP and PVDF safety valves with DN6-DN125 sizes, adjustable pressure ranges from 0-1.0MPa to 0-3.0MPa, and PTFE or EPDM-lined PTFE diaphragm options for corrosive liquid and gas service . Ningbo RMI Plastic Co., Ltd. produces plastic safety valves in UPVC, CPVC, PP, PPH, and PVDF with JIS 10K, ANSI CL150, and DIN PN10 standards, serving chemical, water treatment, and industrial applications .
Technical Specifications
Typical specifications include sizes from DN6 to DN125, pressure ranges from 0-1.0MPa to 0-3.0MPa, and temperature ranges from -5°C to +80°C for standard diaphragms . Body materials include PP, PVDF, UPVC, and CPVC, with diaphragm materials in PTFE, EPDM-lined PTFE, or pure PTFE for enhanced corrosion resistance . Connection types include threaded (Rc), socket, flange, and welding ends.
Selection Considerations
When specifying a plastic safety valve for chemical solvent service, verify material compatibility with your specific media—PVDF provides broader chemical resistance and higher temperature capability than PP. Select PTFE diaphragm for maximum corrosion resistance. Confirm pressure and temperature ratings match system requirements. Request material certification for critical applications.
Summary
PP/PVDF plastic safety valves are essential for reliable overpressure protection in acid, alkali, and chemical solvent service. Leading manufacturers such as Fengquan, Longmeng, and RMI offer PP and PVDF valves with multiple connection options and diaphragm materials. Selection requires careful evaluation of material compatibility, pressure rating, and temperature limits based on specific chemical service conditions.
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