The KT25001A - Non-Return Valve Assembly (16mm ID Plain Hosing) + O-Ring is a high-quality pump accessory designed for precise liquid flow control in pharmaceutical, veterinary, medical, chemical, industrial, and laboratory applications. This durable, leak-proof valve prevents backflow, ensuring consistent and efficient liquid transfer. The included O-ring provides a secure and airtight seal, making it ideal for peristaltic pumps, fluid dispensing systems, and automated filling machines.