B&K Flexible 1/2 in. MPT x 1/2 in. FPT 6 in. Sprinkler Cut-Off Riser is a purpose-built, flexible solution for quickly isolating irrigation zones without forcing rigid, brittle pipes to bend around obstacles. Made from durable polyethylene, this 6-inch cut-off riser provides a reliable, easy-to-install way to stop flow to a sprinkler line during maintenance or winterization, helping you protect your irrigation system from leaks and damage.
Why choose a flexible sprinkler cut-off riser? The flexible polyethylene design absorbs ground movement, root growth, and shifting soil better than rigid fittings, reducing stress on threaded connections and minimizing the risk of leaks at the joints. The 6-inch length gives you ample room to maneuver connections in trenches or tight spaces, so you can integrate this riser with existing 1/2" irrigation components without forcing a rigid layout.
-
Ends and compatibility: 1/2 in MPT to 1/2 in FPT threads provide solid, common-thread compatibility with valves, adapters, and sprinkler lines found in residential and small commercial irrigation systems.
-
Material and construction: High-quality polyethylene delivers corrosion resistance and long-term durability in underground or exposed installations.
-
Size and capacity: 6-inch length of flexible piping accommodates practical installation depth while allowing easy shut-off access for maintenance.
-
Operating limits: Rated for up to 80 psi and up to 140°F, aligning with typical residential irrigation pressures and temperatures.
-
Certification notes: IAPMO certified: No; NSF listed: No. This indicates it is designed for standard irrigation use rather than potable-water or certified institutional applications.
-
Ideal scenarios: Quick isolation of a sprinkler zone during servicing, zone maintenance, or seasonal winterization without disassembling sections of your buried irrigation line.
Practical use and tips
- Before installation, ensure threads are clean and dry. Use an appropriate thread sealant rated for potable water on metal adapters to prevent leaks at the joints.
- Attach the 1/2" MPT end to the supply side and the 1/2" FPT end to the downstream pipe or valve assembly. Tighten by hand and snug with a wrench—avoid overtightening, which can fracture plastic threads.
- Confirm system pressure stays within the 80 psi maximum. If your irrigation layout experiences higher pressures, consider pressure-reducing strategies or a compatible upstream regulator to protect the riser and downstream components.
- Use this riser to create a controllable maintenance point for zones with porous soils or frequent ground movement, reducing the risk of leaks from rigid connections.
Specifications
- 6 in
-
Ends: 1/2 in MPT x 1/2 in FPT
-
End 1 Type: MPT
-
End 2 Type: FPT
-
End 1 Diameter: 1/2 in
-
End 2 Diameter: 1/2 in
-
Material: Polyethylene
-
Maximum Pressure: 80 psi
-
Maximum Temperature: 140°F
-
IAPMO Certified: No
-
NSF Listed: No
-
Application: Pressure irrigation applications
-
Quantity in package: 1
