McMaster 4599K44 Gradual On Off Valve, Bronze Body & Gate, Easy Maintenance, Wheel Handle Rising Stem, 3 4 NPT Female, Class 150, MSS SP 80 38G552 (3) Torx Screwdrivers (3) Torx Screwdrivers Graduation Range 20 to 100 mL Labware Closure Material Polyethylene (PE) Labware Closure Liner Material Polyethylene Labware Body Material Polypropylene Autoclavable Yes Graduation Subdivisions 10 mL Labware Nominal Capacity English 4 oz Labware Clarity Transparent Labware Capacity Metric 120 mL Labware Nominal Capacity Metric 120 mL Labware Capacity English 4 oz Pre Cleaned None Labware Body Color White Mouth Wide Labware Closure Color Red Labware Basic Material Plastic Labware Closure Type Screw On Sterile Non Sterile Sterile Closure Material Polyethylene Capacity 4 oz Valve Function On Off Valve Type Gate Actuation Manual Handle Style Wheel Handle Material Iron Pipe Size 3 4 Gender Female Thread Type NPT Flow Coefficient (Cv) 32 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 2 1 4" Overall Height 7 5 8" Stem Type Rising Seal Type Packing For Use With Water they open and close gradually to prevent sudden starts and stops