The UPVC worm gear butterfly valve D371X-10S is a wafer-type butterfly valve equipped with a worm gear drive. The body and disc are made of UPVC material, the seat is typically NR (natural rubber), with optional EPDM or FPM, and the stem is standard 45# carbon steel (optional 304/316 stainless steel).
This model is available in sizes from DN50 to DN400. The worm gear box enables smooth 90° opening and closing operation, providing labor-saving performance and self-locking capability. The valve complies with GB/DIN standards, offers excellent corrosion resistance, and is widely used in water treatment, chemical, environmental protection, and other normal temperature low-pressure pipeline systems.
Стандарт: GB (Chinese national standard) / DIN (German standard)
Body & Disc Material: UPVC (default)
Inspection: 100% factory tested
| Модель | Size (DN) | Inch |
|---|---|---|
| D371X-10S | ДН50 | 2″ |
| D371X-10S | DN65 | 2.5″ |
| D371X-10S | ДН80 | 3″ |
| D371X-10S | ДН100 | 4″ |
| D371X-10S | DN125 | 5″ |
| D371X-10S | ДН150 | 6″ |
| D371X-10S | ДН200 | 8″ |
| D371X-6S | ДН250 | 10″ |
| D371X-6S | ДН300 | 12″ |
| D371X-4S | DN350 | 14″ |
| D371X-4S | DN400 | 16″ |
UPVC (default)
PPH
FRPP
NR (Natural Rubber) – default
EPDM
FPM (Viton)
45# Carbon Steel – default
304 Stainless Steel
316 Stainless Steel
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