Alwa-KFR (V4120) Shutoff valve with integrated backflow preventer
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| Approvals | Alwa-KFR are DVGW-certified under registration-no. NW-6130AS2114 and low noise according to DIN 4109. |
| Materials | All parts with contact to the flow made of corrosion resistant red bronze, stainless steel or plastic |
| Body pattern | Y-pattern |
| Integrated non-return device | yes |
| Max. media temperature | 90 oC |
| Static pressure | PN16 |
| Additional description | Suitable connections see 'Connections for Alwa-valves'. |
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| DN size | Port diameter | Connection size | Port connection type | Kvs value | Type | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | mm | ||||||||||||||||||
| 15 | R1/2 | — | internal threads | 5.1 | V4120YY015  | |||||||||||||||
| 20 | R3/4 | — | internal threads | 10.6 | V4120YY020 | |||||||||||||||
| 25 | R1 | — | internal threads | 17.1 | V4120YY025 | |||||||||||||||
| 32 | R1 1/4 | — | internal threads | 29 | V4120YY032 | |||||||||||||||
| 40 | R1 1/2 | — | internal threads | 35.1 | V4120YY040 | |||||||||||||||
| 50 | R2 | — | internal threads | 64.5 | V4120YY050 | |||||||||||||||
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| DN size | Port diameter | Connection size | Port connection type | Kvs value | Type | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | mm | ||||||||||||||||||
| 15 | G3/4 | — | external threads | 5.1 | V4120XX015 | |||||||||||||||
| 20 | G1 | — | external threads | 10.6 | V4120XX020 | |||||||||||||||
| 25 | G1 1/4 | — | external threads | 17.1 | V4120XX025 | |||||||||||||||
| 32 | G1 1/2 | — | external threads | 29 | V4120XX032 | |||||||||||||||
| 40 | G1 3/4 | — | external threads | 35.1 | V4120XX040 | |||||||||||||||
| 50 | G2 3/8 | — | external threads | 64.5 | V4120XX050 | |||||||||||||||
| 65 | G3 | — | external threads | 88.5 | V4120XX065 | |||||||||||||||
| 80 | G3 1/2 | — | external threads | 129 | V4120XX080 | |||||||||||||||
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| DN size | Port diameter | Connection size | Port connection type | Kvs value | Type | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | mm | ||||||||||||||||||
| 15 | R1/2+G3/4 | — | internal and external threads | 5.1 | V4120YX015 | |||||||||||||||
| 20 | R3/4+G1 | — | internal and external threads | 10.6 | V4120YX020 | |||||||||||||||
| 25 | R1+G1 1/4 | — | internal and external threads | 17.1 | V4120YX025 | |||||||||||||||
| 32 | R1 1/4+G1 1/2 | — | internal and external threads | 29 | V4120YX032 | |||||||||||||||
| 40 | R1 1/2+G1 3/4 | — | internal and external threads | 35.1 | V4120YX040 | |||||||||||||||
| 50 | R2+G2 3/8 | — | internal and external threads | 64.5 | V4120YX050 | |||||||||||||||
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| DN size | Port diameter | Connection size | Port connection type | Kvs value | Type | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | mm | ||||||||||||||||||
| 15 | R1/2 | internal threads | 5.1 | V4119YX015 | ||||||||||||||||
| 20 | R3/4 | internal threads | 10.6 | V4119YX020 | ||||||||||||||||
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| DN size | Port diameter | Connection size | Port connection type | Kvs value | Type | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | mm | ||||||||||||||||||
| 15 | G1 | external threads | 5.1 | V4120KK015 | ||||||||||||||||
| 20 | G1 1/4 | external threads | 10.6 | V4120KK020 | ||||||||||||||||
| 25 | G1 1/2 | external threads | 17.1 | V4120KK025 | ||||||||||||||||
| 32 | G2 | external threads | 29 | V4120KK032 | ||||||||||||||||
| 40 | G2 1/4 | external threads | 35.1 | V4120KK040 | ||||||||||||||||
| 50 | G2 3/4 | external threads | 64.5 | V4120KK050 | ||||||||||||||||
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| DN size | Port diameter | Connection size | Port connection type | Kvs value | Type | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | mm | ||||||||||||||||||
| 15 | — | flanges | 5.1 | V4120FF015 | ||||||||||||||||
| 20 | — | flanges | 10.6 | V4120FF020 | ||||||||||||||||
| 25 | — | flanges | 17.1 | V4120FF025 | ||||||||||||||||
| 32 | — | flanges | 29 | V4120FF032 | ||||||||||||||||
| 40 | — | flanges | 35.1 | V4120FF040 | ||||||||||||||||
| 50 | — | flanges | 64.5 | V4120FF050 | ||||||||||||||||
| 65 | — | flanges | 132 | V4120FF065 | ||||||||||||||||
| 80 | — | flanges | 193 | V4120FF080 | ||||||||||||||||
| 100 | — | flanges | 251 | V4120FF100 | ||||||||||||||||
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| Description | Additional Product Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Valve insert with integrated backflow preventer for all valve housings to DVGW, for DN15 | VS1401B015 | |||||||||||||||||||
Valve insert with integrated bac
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