Self sealing gate valve

Self-cleaning dump valve for chemical reactor tank

Self-cleaning filter assembly for solenoid-actuated valve

Self-cleaning inlet head for a fluid

Self-cleaning non-return drainage valve

Self-cleaning orifice assembly

Self-cleaning valve and cryopump utilizing the same

Self-cleaning valve assembly

Self-cleaning valve plug and seat assembly

Self-cleaning variable pressure reducing element

Self-cleaning water faucet valve construction

Self-cleaning, fluid pressure biased gate valve

Self-closing valve

Self-grinding valve mechanism

Sewage disposal method and system

Sewer check valve and cleanout apparatus

Shaft brush for preventing coking in a gas management valve

Shaft seal for a check valve

Shut-off device in the form of a ball valve

Shut-off valve