500型式F系聚丙烯，PVC，PVDF和铝泵

由金属空气圆顶，顶板和底板支撑的固体塑料块，通过螺柱提供安全，而不会损害快速维护。通常用于溶剂/化学品和染料，通常是不锈钢较便宜的选择。Only ‘one nut’ to access diaphragms with pump ‘in-line’ Only four nuts to access balls and seats Only four bolts to maintain air valve with pump ‘in-line’ Max operating temp 80ºC (176ºF) for Polyproylene, PVC, PVDF pumps Max operating temp 121ºC (250ºF) for Aluminium pumps fitted with high temp diaphragms (specify H as 6th digit in pump code).