Raritan Valve w/Cross Slits Joker. Products include marine toilets waste treatment systems icemakers and water heaters. Committed to the environment and preserving sea life Raritan designs products to help maintain an environmental balance and ensure the quality of marine waters. Specifications for Raritan Joker Valve w/Cross Slits: Manufacturer: Raritan Color: Black Package Contents: Raritan Joker Valve w/Cross Slits Raritan C254: Valve w/Cross Slits Joker