Septic tanks are formed from a wide variety of materials, of which concrete and plastic are the most common, although steel is available as a much less popular option. Read More…
Leading Manufacturers
All Plastics and Fiberglass, Inc.
Mobile, AL | 800-226-1134With over 100 years combined experience, All Plastics and Fiberglass has the experience to handle all your plastic and fiberglass needs.
Park Plastic Products
Fort Wayne, IN | 800-228-7716Specializing in fabricated plastic tanks such as water tanks, polypropylene tanks, polyethylene tanks and storage tanks, Park Plastic Products is capable of making your plastic tank in any size or dimension.
Roto Dynamics Inc.
Orange, CA | 877-768-6585Roto Dynamics Inc., custom rotational molders serving rotomolding and plastic tank needs nationwide. We are dedicated to our customers manufacturing needs. Building customer relationships based on integrity and communication assists us in developing a competitive advantage within the industry.
U.S. Plastic Corp.
Lima, OH | 800-809-4217United States Plastic Corp. manufactures and distributes some 25,000 plastic items serving over 85,000 clients operating in a factory five acres under roof. Our major product is manufacturing plastic tanks, the distribution of bottles, carboy and plastic containers. This also includes plastic sheet, rods, tubes, flexible tubing and thousands of plastic fittings.
Poly Processing Company
French Camp, CA | 866-765-9957With over 30 years of experience, Poly Processing Company has become a leading manufacturer of rotationally molded poly tanks, plastic storage tanks, chemical tanks, double wall tanks, chemical storage tanks and miscellaneous tanks. We offer cost effective solutions to your plastic tank needs.
Offering many advantages over both concrete and steel, plastic septic tanks feature high resistance to cracking, zero rust, light-weight, high corrosion resistance, water-tightness and low costs. Of the plastic materials, polyethylene (PE), a light, chemical-resistant thermoplastic, is the most commonly used plastic resin used for plastic septic tanks.
Polyethylene resins can be linear high-density (HDLPE), cross-linked high-density (XLPE), or linear low-density (LLDPE) resins. Following are polypropylene, polyvinyl chloride and polyvinylidene fluoride. In comparison to polyethylene, polypropylene (PP) is a light, durable thermoplastic that is denser, stiffer, and stronger than polyethylene and has a much higher melting point of 320ºF.
Septic Tanks - All Plastics and Fiberglass, Inc.Polyvinyl chloride (PVC) is a durable, transparent thermoplastic that is resistant to non-essential oils but cannot be exposed to some solvents. Polyvinylidene fluoride (PVDF) is another durable thermoplastic that has high resistance to chemicals and abrasion.
Septic systems consist of two major parts: a drainfield and a septic tank. The drainfield functions to remove contaminants and impurities from the liquid that emerges from the septic tank, and can also be referred to as either a leach field or a leach drain. The septic tank itself allows wastewater to enter in the first chamber of the tank.
After solids have settled and scum starts to float they are anaerobically digested, thus reducing the volume of solids within the septic tank. Next, the liquid component flows through the dividing wall into the tank's second chamber. In this chamber further settlement occurs, with the excess liquid then draining into the drain field. The majority of plastic septic tanks are formed using either a molding or welding process.
Plastic tank molding, including rotational, blow, and injection molding, involves using a model shape to form the tank. Plastic tank welding is a process in which two pieces of heat-softened plastic are joined through the application of pressure. Examples of this process are hot air and extrusion welding. Septic tanks differ in size and capacity, ranging from small tanks holding a few gallons to tanks exceeding 35 feet in length, with a storage capacity of 50,000 gallons or more.
