![Rule Check Valve f\/360\/500 Bilge 1" Straight Ports [1221R]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/600x600/products/62314/86358/101799XL__78817.1759409539.jpg?c=2 "Rule Check Valve f\/360\/500 Bilge 1\" Straight Ports [1221R]")
Product Overview
Check Valve for 360/500 Bilge 1" Straight Ports
Replacement Check valves for the "new" Rule-Mate Bilge pumps. Helps prevent backflow of water into the bilge.
Specifications:
- 3/4" (19mm)
![Rule Check Valve f\/360\/500 Bilge 1" Straight Ports [1221R]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/1280x1280/products/62314/86358/101799XL__78817.1759409539.jpg?c=2 "Rule Check Valve f\/360\/500 Bilge 1\" Straight Ports [1221R]")
![Rule Check Valve f\/360\/500 Bilge 1" Straight Ports [1221R]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/1280x1280/products/62314/86359/101799BXL__21794.1759409540.jpg?c=2 "Rule Check Valve f\/360\/500 Bilge 1\" Straight Ports [1221R]")
Check Valve for 360/500 Bilge 1" Straight Ports
Replacement Check valves for the "new" Rule-Mate Bilge pumps. Helps prevent backflow of water into the bilge.
Specifications:
![Rule Check Valve f\/800\/1100 Bilge 1-1\/8" Straight Ports [1223R]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/62315/86360/101801XL__68780.1759409542.jpg?c=2 "Rule Check Valve f\/800\/1100 Bilge 1-1\/8\" Straight Ports [1223R]")
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![Rule Rule-Mate 500 Fully Automated Bilge Pump - 24V [RM500B-24]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/25974/26595/75166XL__91159.1542227625.jpg?c=2 "Rule Rule-Mate 500 Fully Automated Bilge Pump - 24V [RM500B-24]")
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![Rule Side Mount Bracket f\/Newer 360-1100 GPH Rule Pumps [66A]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/25984/26605/75183XL__88866.1542227644.jpg?c=2 "Rule Side Mount Bracket f\/Newer 360-1100 GPH Rule Pumps [66A]")