Resilient Seated Ductile Iron Gate Valve also commonly known as a sluice valve. The gate valve is manually operated by a rising stem handwheel operation made in accordance with AS2638.2. AS4087 PN16 flanged (compatable with table D/E). Great for use in waste water, water treatment and fire industries. Outside stem and yoke, clockwise to close. All Bolt holes are silicone filled to avoid water pooling and corrosion.