What is ANSI/AWWA C509 Cast Iron Gate Valve
ANSI/AWWA C509 cast iron gate valve is a shut-off valve that uses a gate as its closure member, with the gate's movement direction perpendicular to the fluid flow. It features low fluid resistance and allows bidirectional flow of the medium. The valve has a relatively large structural height and longer opening/closing time.
Classifications:
Wedge-type (including single-gate, double-gate, and elastic-gate designs)
Parallel-gate type (including single-gate and double-gate designs)
By stem structure, it is divided into:
Rising-stem gate valve (stem threads exposed for easy lubrication)
Non-rising-stem gate valve (threads enclosed, stem rotates only)
Materials & Specifications:
Body materials: Gray cast iron, carbon steel, stainless steel, etc.
Connection type: Flanged
Nominal diameter range: DN40–DN1200
Applications: Water, steam, oil, and pipelines in petrochemical, pharmaceutical, and power industries
Design Features:
Wedge-shaped sealing surface relies on self-sealing or forced closure, but maintenance is less convenient.
Double-gate models require vertical installation.
Non-rising-stem models suit space-constrained environments.
Improved Designs:
Motor-driven automatic adjustment
Screw rod transmission structure
Magnetic block sealing device
Optimized gate arc structure to reduce fluid resistance
Technical Parameters:
Some models operate at ≤1.0 MPa
Compliance with ANSI, JIS-10K, and other standards
ANSI/AWWA C509 Cast Iron Gate Valve Specification
Design standard conform to: ANSI/AWWA C509
Face to face conform to: ASME B16.10
Pipe connection conform to: ASME B16.1 CLASS125 ANSI/AWWA C111/A21.11 AWWA C606
Pressure testing standard conform to: ANSI/AWWA C509
Actuator: 2 "AWWA operating nut or hand wheel, chain wheel, gearbox, etc.
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