The Model 100S and 2100S Seawater Service Hytrol Valve is the basic valve used for seawater applications. it is the valve of choice for system applications requiring deluge, pressure regulation, pressure relief, solenoid operation, rate of flow control, liquid level control or check valve operation. The rugged simplicity of design and packless construction assure a long life of the dependable, trouble-free operation. It is available in various materials and in a full range of sizes, with either screwed or flanged ends.  Its applications are unlimited.