Valve Comparison Table
- 1. Valve Comparison Item SMC Ball Valve Stainless steel Valve PVC Valve Types Major S M C Stainless Steel, Polyvinyl Chloride(PVC) Ingredients Rubber or Teflon Manufacturing Heat Press Foaming Casting Work, Cut-off Casting Work, Cutting Process Work, Finishing Work, Injection Molding Process Manufacturing Short Long Long Time (Simple Structure, (Complicated (Complicated Structure, Process Simplification) Structure, Difficult to Difficult to manufacture) manufacture) Watertightnes Very High High Average s Perfect watertight using Watertight by a ball Watertight by a ball an O-ring and 2 and O-ring on the and O-ring on the Teflon Sheets inside. But possible inside to occur the problem due to the wear of the O-ring Deformation No No Occurrence of by Heat deformation by heat (Almost no deformation (The valve is easily occurs due to the deformed even at low material of the heat due to the thermo-hardening resin properties of the - Excellent in heat typical material of the resistance) thermoplastic resin- remarkably low in heat resistance Harmful to Same material as water Harmless but Highly harmful to human tank and harmless to potentially harmful human body by a large human body depending on the amount of hazardous material of internal substances emitted
- 2. coating agent from PVC itself. Maintenance Almost no maintenance High maintenance High maintenance cost required cost (No maintenance (Steady maintenance (Frequent replacement required as this is free required due to the required due to the from rust, scale, etc.) rust etc. in the deformation by heat in external valve) summer and freeze and rupture in winter) Item SMC Ball Valve Acid-Resistant Valve PVC Valve Product Life Semi-permanent 3~4 years (Frequent 1~2 years (Depending rust) on deformation by heat) Strengths Excellent in corrosion resistance and strength as it is made of SMC material and no crack occurred due to the distinctive durableness unique to SMC material In addition to the No deformation due Goon in chemical semi-permanent to the high heat resistance material life, it is (Based on SUS316L) designed to allow the (But, possible freeze replacement of the and rupture in low wear part only easily. temperature) Easy maintenance, repair, etc. Good in chemical resistance and abrasion resistance. No freeze and rupture. Lower in price Lower in price compared to stainless compared to stainless steel products (Refer steel products to the price list enclosed)
- 3. Low construction Low construction cost cost as its weight is as its weight is lighter lighter than metal than metal products. products. Weakness Requires large direct Deformation occurred Low in heat and cold investment costs for by high heat in case resistance making molds as it is of SUS304 a molded product Expensive and low High in gas in corrosion permeability resistance Rust when left Strength becomes unattended for a long weak when exposed to time the nature Difficult to install or High specific gravity replace due to the heavy weight of product No part level Harmful to human replacement possible body (use a plasticizer and it requires to and stabilizer) replace the entire valve even when only a part is defective High maintenance costs due to short product life 기타사항 Excellent in acid Decline of market Degradation of resistance, chemical share Competitiveness resistance, abrasion Caused by an Caused by the resistance, etc. and expensive product occurrence of many applicable to broad price, management problems, etc. and various fields such issues, etc. as water supplies, Purification plants, General chemistry companies, drug use pipelines, general industrial water, terminal disposal plants of sewage, general wastewater treatment facilities, general