http://stvvalve.com/stainlessgate/2016/04/23/ANSI304_Gate_Valve_150LB_DN50_RF/

Product Details:

Cast Steel Gate Valves
Valve Manufacturing standards: API, ANSI, BS, DIN, JIS
Gate Valve Size range: from 1/2 inch to 36 inches (DN15mm - DN900mm)
Pressure: from ANSI class 150 to 2500 (PN1.6 - 42MPa)
Applicable temperature: -196 - 593 deg. C
Gate Valve Connection: flanged, butt-welded
valve Body materials: carbon steel, alloy steel, stainless steel, WCB, LCB, WC1, WC6, WC9, C5, C12, CF3, CF3M, CF8, CF8M, MONEL, etc.