Siemens ALG Valve Connection Fitting Sets (DN20–DN40)
Siemens ALG Valve Connection Union Sets (DN20–DN40)
The Siemens ALG series are malleable cast iron union sets for connecting threaded Siemens valve bodies to the pipeline. Sets of 2 are for 2-way valves and sets of 3 for 3-way valves; available in sizes DN20–DN40.
The set converts the valve's external thread (G) ports to an internal thread (Rp) connection on the pipe side; compatible valve series are listed below.
Models and order codes
| Model | DN | Valve side | Material | Order code |
|---|---|---|---|---|
| ALG202 | DN20 | G 1¼" | Malleable cast iron | BPZ:ALG202 |
| ALG203 | DN20 | G 1¼" | Malleable cast iron | BPZ:ALG203 |
| ALG253 | DN25 | G 1½" | Malleable cast iron | BPZ:ALG253 |
| ALG322 | DN32 | G 2" | Malleable cast iron | BPZ:ALG322 |
| ALG403 | DN40 | G 2¼" | Malleable cast iron | BPZ:ALG403 |
Technical specifications
| Specification | Value |
|---|---|
| Connection type | Internal thread |
Compatible products
- Siemens VVG44 Externally Threaded 2-Way Seat Control Valve PN16 — VVG44.20-6.3, VVG44.32-16
- Siemens VXG44 Externally Threaded 3-Way Seat Control Valve PN16 — VXG44.20-6.3, VXG44.25-10, VXG44.40-25
- Siemens VVP45.32-16 Externally Threaded 2-Way Seat Valve DN32 PN16 — VVP45.32-16
- Siemens VXP45.40-25 Externally Threaded 3-Way Seat Valve DN40 PN16 — VXP45.40-25
- Siemens VPP46 Externally Threaded Pressure-Independent Combined Balancing and Control Valve PN25 — VPP46.25F1.8, VPP46.25F3.6
- Siemens VQP46 Externally Threaded On/Off Pressure-Independent Control Valve PN25 — VQP46.25F1.8
- Siemens VQI46 Internally Threaded On/Off Pressure-Independent Control Valve PN25 — VQI46.25F1.8
This list is verified compatibility information based on Siemens product matching data; it is not a list of similar-product suggestions. You can make the final selection with our engineering team based on your project conditions (differential pressure, stroke, control signal).
For the right model selection and wholesale or project pricing, contact the Novus Energy engineering team on our WhatsApp line.