Diaphragm only. Spring, spring seat, bonnet, and complete valve are sold separately.
The Netafim 61DIA2LP low-pressure diaphragm, manufacturer part number 71680-007400, is a replacement sealing component for 2-inch, 2-inch angle, and 323 Series 100 iron valves. It is diaphragm number 2, with a 118 mm (4.65-inch) dimension and a 10–145 psi diaphragm operating range.
This low-pressure version is a separate selection from the standard-pressure 61DIA2HP diaphragm. Match the existing diaphragm number and the valve’s operating requirements before ordering. Both versions have the same listed dimension, so a dimensional match alone does not establish the correct pressure configuration.
Match the diaphragm to low-pressure valve service
The natural-rubber diaphragm is the flexible sealing component that moves as control-chamber pressure changes. The low-pressure configuration supports the operating range of compatible valves equipped for this diaphragm, making pressure class an important part of the repair decision.
| Feature |
Benefit |
| Low-pressure configuration |
Matches compatible valves that use diaphragm number 2. |
| Direct-sealing diaphragm |
Opens and closes the valve water passage as control-chamber pressure changes. |
| Individual replacement part |
Lets you replace the diaphragm while ordering other repair parts only as needed. |
Technical specifications
| Specification |
Detail |
| Manufacturer |
Netafim |
| Model |
61DIA2LP |
| Manufacturer part number |
71680-007400 |
| Diaphragm number |
2 |
| Pressure configuration |
Low pressure |
| Diaphragm operating range |
10–145 psi |
| Diaphragm dimension |
118 mm (4.65 inches) |
| Material |
Natural rubber |
| Compatible valve family |
Series 100 iron valves: 2-inch, 2-inch angle, and 323 |
Before ordering
Match the valve family as well as its size. Netafim nylon and PVC valve diaphragms have separate part numbers, and 323 identifies a specific valve configuration. The diaphragm operating range does not replace the pressure rating or operating restrictions of the complete valve and its controls.
| Check |
What to confirm |
| Existing part |
Match 61DIA2LP, 71680-007400, and diaphragm number 2. |
| Valve construction |
Confirm a compatible Series 100 iron valve rather than a nylon or PVC model. |
| System conditions |
Confirm the required pressure class and the complete valve’s pressure, temperature, and fluid limits. |
| Repair scope |
Check whether the spring, spring seat, or bonnet also needs separate replacement. |
Need help confirming the correct replacement diaphragm? Contact UnitedBuilt through online chat, email parts@unitedbuilt.com, or call 602-253-7750 with your valve model, existing part number, or photos.
