421
Silent float valves
Plastic body and seat
Arm cap made in plastic
Not suitable for drinking water
Maximum working temperature: 80°C (176°F)
→ Fittings
421A1
Round adjustable brass arm without thread
| DN | − | A | ø B | Standard packaging | ||
|---|---|---|---|---|---|---|
| Pieces | Kg | Dimensions | ||||
| 3/8" | − | 200 | 3.5 | 50 | 3 | − |
| 1/2" | − | 200 | 3.5 | 50 | 3 | − |
421A2
Round adjustable brass arm, 1/4W thread
| DN | − | A | ø B | Standard packaging | ||
|---|---|---|---|---|---|---|
| Pieces | Kg | Dimensions | ||||
| 3/8" | − | 200 | 3.5 | 50 | 3 | − |
| 1/2" | − | 200 | 3.5 | 50 | 3 | − |
421B1
Round adjustable iron arm without thread
"Finigard" rustproofing
| DN | − | A | ø B | Standard packaging | ||
|---|---|---|---|---|---|---|
| Pieces | Kg | Dimensions | ||||
| 3/8" | − | 200 | 3.5 | 50 | 3 | − |
| 1/2" | − | 200 | 3.5 | 50 | 3 | − |
421B2
Round adjustable iron arm, 1/4W thread
"Finigard" rustproofing
| DN | − | A | ø B | Standard packaging | ||
|---|---|---|---|---|---|---|
| Pieces | Kg | Dimensions | ||||
| 3/8" | − | 200 | 3.5 | 50 | 3 | − |
| 1/2" | − | 200 | 3.5 | 50 | 3 | − |
| Fittings | 3/8" | 1/2" | ||
|---|---|---|---|---|
 | 291 | Flat plastic float ball, thread filetto 1/4W | ø 90 | ø 90 |
 | 302 | Plastic float ball with passing-throught hole | C | C |
| Documents | |
|---|---|
| Installation instructions |  |
| Materials used in manufacturing | |
| RoHS and REACH declarations | |
| Sales conditions | |
The above data are subject to change without notice.
ST srl - Via E.Fermi 64 - 25030 Brandico (Bs) Italy - P.Iva 02054360983 - Tel +39.030.975115 - Fax +39.030.975891 - 
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