Our products' are 3/4"-19mm 3"-76.2mm 3.5"-88.9mm 4"-101.6mm ect.And its weight are 75g,68.9g,78.7g,109.4g, 44.9g etc. Our products are used at room temperature and normal pressure.And also we can product as you requirement.
Our factory is specialized in safety valve,vent valve,pressure release valve many years.We have rich production experience and strict management system.