FRPP Sight Glass DN15-150

A sight glass is a transparent tube or window that allows the operator to visually see the level of liquid in a tank or container. CPVC, UPVC, PVDF, PPH and FRPP are materials that can be used to make sight glasses.
CPVC (Chlorinated Polyvinyl Chloride) sight glasses are made of thermoplastic material. They have good temperature resistance, chemical resistance and relatively low cost. They are often used in industrial and commercial applications where these properties are required.
UPVC (Unplasticized Polyvinyl Chloride) sight glasses are also made of thermoplastic material. They are known for their high strength, corrosion resistance, and durability. They are often used in water and sewage treatment facilities, and in chemical and petrochemical plants.
PVDF (Polyvinylidene Fluoride) sight glasses are made of a strong, tough and abrasion resistant thermoplastic material. They are known for their chemical resistance and high temperature resistance. They are often used in corrosive chemical processing, pharmaceutical production and water treatment.
PPH (Polyphenylene oxide) sight glasses are made of a strong, stiff and heat-resistant thermoplastic. They have excellent resistance to chemicals and high temperature. They are often used in petrochemical, chemical and water treatment facilities.
FRPP (Fiberglass Reinforced Polypropylene) sight glasses are made of composite material of polypropylene reinforced with fiberglass. They are known for their strength, durability, and resistance to corrosion and high temperatures. They are often used in industrial and commercial applications where these properties are required, such as in chemical and petrochemical plants.
Just like bottom valves, the choice of material for sight glass will be based on the specific application, environment, temperature and chemical resistance required.