McMaster 4599K48 Gradual On Off Valve, Bronze Body & Gate, Easy Maintenance, Wheel Handle Rising Stem, 2 NPT Female, Class 150, MSS SP 80 3FE91 (25) M8x20 mm (25) M8x20 mm Ratcheting Headgear Faceshield Assembly Headgear Suspension Ratchet Headgear Material Nylon Headgear Style Single Crown Compatible with Brand Sellstrom Includes No Visor Coatings No Minimum Operating Temperature 23 Degrees F Application Metalworking Includes Anti Fog Visor Coating Yes Welding Shade Designation W5 Face Shield Type Face Shield Assembly Maximum Operating Temperature 131 Degrees F Compatible with Series DP4 Includes Scratch Resistant Visor Coating No Suspension Adjustment Type Ratchet Secondary Visor Welding Shade Designation W5 Includes Anti Static Visor Coating No Compatible with Manufacturer Model Number S32011 Oil Specifications Met MSS SP 80 RoHS RoHS 3 (2015 863 EU) Compliant REACH Not Compliant DFARS Specialty Metals COTS Exempt Country of Origin United States USMCA Qualifying No Schedule B 8481 Valve Function On Off Valve Type Gate Actuation Manual Handle Style Wheel Handle Material Iron Pipe Size 2 Gender Female Thread Type NPT Flow Coefficient (Cv) 230 Pressure Class 150 Maximum Pressure 300 psi @ 100° F Maximum Steam Pressure 150 psi @ 365° F Temperature Range 20° to 400° F Body Material Bronze Gate Material Bronze Packing Material Graphite End to End Length 3 5 8" Overall Height 13 1 4" Stem Type Rising Seal Type Packing For Use With Water