SMC (6460090) 646 Series Brass Check Valve ; 3/8" FNPT x 3/8" MNPT
Brass Check Valve 3/8" FNPT x 3/8" MNPT
Prevents backflow in residential and commercial water treatment systems with reliable spring-loaded brass construction
One-Way Flow Protection
Spring-Loaded Mechanism
Internal spring ensures positive closure and prevents reverse flow even under variable pressure conditions
Brass Body Construction
Lead-free brass housing resists corrosion and maintains structural integrity in potable water applications
3/8" NPT Threading
Female inlet and male outlet threads provide secure connections to standard piping and filtration equipment
Low Cracking Pressure
Opens easily under normal system pressure while closing instantly when flow stops or reverses
Where It Fits
The SMC 6460090 check valve works with any water treatment system using 3/8" NPT connections. Common applications include reverse osmosis systems, filtration manifolds, booster pump installations, and anywhere backflow prevention is required. The female inlet accepts 3/8" male pipe threads while the male outlet threads into 3/8" female fittings or housings. Suitable for residential and light commercial water filtration systems operating under standard municipal or well water pressure.
System Protection
Prevents contamination from backflow into source water
Standard Threading
NPT threads fit most common water treatment equipment
Lead-Free Certified
Safe for drinking water applications
Maintenance-Free
No scheduled replacement or servicing required
Brass Check Valve 3/8" FNPT x 3/8" MNPT
Prevents backflow in residential and commercial water treatment systems with reliable spring-loaded brass construction
One-Way Flow Protection
Spring-Loaded Mechanism
Internal spring ensures positive closure and prevents reverse flow even under variable pressure conditions
Brass Body Construction
Lead-free brass housing resists corrosion and maintains structural integrity in potable water applications
3/8" NPT Threading
Female inlet and male outlet threads provide secure connections to standard piping and filtration equipment
Low Cracking Pressure
Opens easily under normal system pressure while closing instantly when flow stops or reverses
Where It Fits
The SMC 6460090 check valve works with any water treatment system using 3/8" NPT connections. Common applications include reverse osmosis systems, filtration manifolds, booster pump installations, and anywhere backflow prevention is required. The female inlet accepts 3/8" male pipe threads while the male outlet threads into 3/8" female fittings or housings. Suitable for residential and light commercial water filtration systems operating under standard municipal or well water pressure.
System Protection
Prevents contamination from backflow into source water
Standard Threading
NPT threads fit most common water treatment equipment
Lead-Free Certified
Safe for drinking water applications
Maintenance-Free
No scheduled replacement or servicing required
Description
Brass Check Valve 3/8" FNPT x 3/8" MNPT
Prevents backflow in residential and commercial water treatment systems with reliable spring-loaded brass construction
One-Way Flow Protection
Spring-Loaded Mechanism
Internal spring ensures positive closure and prevents reverse flow even under variable pressure conditions
Brass Body Construction
Lead-free brass housing resists corrosion and maintains structural integrity in potable water applications
3/8" NPT Threading
Female inlet and male outlet threads provide secure connections to standard piping and filtration equipment
Low Cracking Pressure
Opens easily under normal system pressure while closing instantly when flow stops or reverses
Where It Fits
The SMC 6460090 check valve works with any water treatment system using 3/8" NPT connections. Common applications include reverse osmosis systems, filtration manifolds, booster pump installations, and anywhere backflow prevention is required. The female inlet accepts 3/8" male pipe threads while the male outlet threads into 3/8" female fittings or housings. Suitable for residential and light commercial water filtration systems operating under standard municipal or well water pressure.
System Protection
Prevents contamination from backflow into source water
Standard Threading
NPT threads fit most common water treatment equipment
Lead-Free Certified
Safe for drinking water applications
Maintenance-Free
No scheduled replacement or servicing required
