... 1/2" to 24"; Metal seat: 1-1/2"to 64" Class: PN10, PN16.125LB, 150LB Mater Resilient Seated Gate Valve. 1) Size: Soft ... NBR/EPDM/brass/bronze/stainless steel seat ring. 4) Material: CAST IRON, DUCTILE IRON 5) Operation: Hand wheel, gear, square head.Standard compliance ... 3202 F4-F5, JIS B2002, ANSI B16.10 4) Flanged end: BS4504, DIN 2532, JIS B2212, ANSI B16.10/ANSI B16.50 Resilient Seated Gate Valve.