Netafim 61B2IT-LP, also cataloged as 61B2ITL under manufacturer item 71610-001630, is a basic inline diaphragm valve with 2" female NPT connections and a 2" flow passage. Its LP configuration uses a low-pressure diaphragm, so matching the diaphragm to the water system is part of selecting the correct replacement.
The 2-inch configuration keeps the nominal connection and flow sizes aligned. Check the available installation space and the existing end connections before selecting a replacement.
Diaphragm control for inline water service
Control pressure applied above the diaphragm closes the water passage. Venting the control chamber lets the valve open. For air-operated service, the pneumatic circuit must supply and release control pressure correctly; confirm its pressure and port arrangement for the installation.
| Feature |
Benefit |
| Direct-sealing diaphragm |
Opens and closes the water passage without a rotating shaft in the flow path. |
| Straight-flow body |
Limits friction losses through the valve. |
| Protective polyester coating |
Helps protect the iron body against corrosive elements and UV exposure. |
| 2" female NPT ends |
Matches the specified threaded piping connection. |
Technical specifications
| Specification |
Detail |
| Manufacturer |
Netafim |
| Legacy catalog model |
61B2IT-LP |
| Current catalog model |
61B2ITL |
| Netafim item number |
71610-001630 |
| Valve configuration |
Basic inline diaphragm valve |
| Nominal size |
2-inch ends / 2-inch flow |
| Connection standard |
ANSI female NPT |
| Diaphragm selection |
LP (low pressure) |
| Water pressure range |
10–145 psi for the specified diaphragm |
| Body and bonnet |
Cast iron |
| Maximum water temperature |
176°F |
Match the valve to the installation
The LP diaphragm has a 10–145 psi water operating range. Check minimum and maximum dynamic pressure as well as required flow before selecting it or replacing an HP valve.
| System detail |
Selection check |
| Piping |
Match the 2-inch male NPT pipe ends. |
| Air-operated control |
Confirm chamber pressurization for closing and venting for opening; match control supply to operating water pressure. |
| Replacement valve |
Compare the complete 61B2IT-LP marking, connection type and diaphragm designation. |
| Included valve assembly |
Basic valve body and bonnet with diaphragm operating assembly. |
| Optional system equipment |
Select external pneumatic controls and installation connections to suit the application; the basic-valve model does not specify an electric solenoid or pilot-control package. |
Before ordering
| Check |
What to confirm |
| Exact configuration |
Match the complete manufacturer model and the markings on the existing valve. |
| Pressure and flow |
Provide minimum and maximum dynamic water pressure, required flow and allowable pressure loss. |
| Control circuit |
Verify pneumatic supply pressure, control-port routing and the required open/closed behavior. |
| As-supplied components |
Confirm any control fittings, selectors and connection hardware needed for your installation. |
| Installation access |
Check available space, pipe alignment and access to the bonnet for service. |
Need help selecting the correct inline valve? Contact UnitedBuilt through online chat, email parts@unitedbuilt.com, or call 602-253-7750 with your connection size, operating method and application.
