

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The DURA PLASTIC PVC40ADSFIP4 is a 4-inch Schedule 40 PVC female adapter fitting designed to transition between a slip socket connection and a female iron pipe thread (FIPT) connection. This fitting accepts a plain-end pipe or male slip fitting on one side and a male-threaded pipe or fitting on the FIPT side, making it a standard transition component in pressure piping systems. It is manufactured from Schedule 40 PVC, which provides a balance of pressure rating and chemical resistance suitable for cold water, irrigation, and industrial fluid handling applications. Plumbers, pipefitters, and irrigation contractors install this fitting as part of larger PVC pressure systems.
This adapter is used in residential and commercial applications where a PVC pressure line must connect to a threaded iron pipe thread fitting or valve. Common install scenarios include pump discharge connections, irrigation mainline assemblies, pool and spa plumbing headers, and industrial process piping. The slip end solvent-welds to standard Schedule 40 or Schedule 80 PVC pipe at the 4-inch nominal diameter, while the FIPT end accepts a standard male NPT threaded fitting.
Designed as an OEM-style replacement and standard-use fitting for 4-inch Schedule 40 PVC pressure piping systems using solvent-cement slip connections and male NPT threaded components.
Installation is performed by licensed plumbers or pipefitters following applicable IPC and local plumbing code requirements. Before assembly, shut off the water supply and depressurize the line completely. The slip end requires proper PVC primer and solvent cement applied per the cement manufacturer instructions and ASTM D2564 guidelines. Do not over-torque threaded connections on the FIPT end, as PVC threads are susceptible to cracking under excessive force; use PTFE thread tape and hand-tighten plus a controlled partial turn with a strap wrench.
Thanks for subscribing!
This email has been registered!