High Performance Worm Gear Flange Cast Iron Butterfly Valve

• Customization: Available
• Media: Water
• Driving Mode: Worm Gear
• Model NO.: GWBV
• Connection Form: Flange
• Structure: Centre Sealing
• Seal Form: Force Sealed
• Valve Stem: Normal
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Normal Temperature (-40°C<T<120°C)
• Material of Seal Surface: Soft Sealed
• Valve Body: Casting
• Application: Water Industrial Usage
• Seat: EPDM
• Model No.: D341X
• Disc: D.I/SS304
• Pressure Rate: Pn10/16
• Face to Face: DIN / BS
• Coating: Epoxy Resin
• Stem: SS304/410/316/420
• Body: Ductile Iron /Cast Iron/Wcb
• Transport Package: Bubble Bags & Wooden Case
• Specification: DN50~DN1000
• Trademark: Walter
• Origin: Suzhou, Jiangsu
• Production Capacity: 4800 Sets Per Month

Product Description

Product Description
1- Body: Ductile Iron GGG40/50 or Cast Iron GG25
2- Spindle: SS420/SS431/SS416
3- Disc: Ductile Iron, Cast Iron. SS304 (CF8) Stainless steel
4- Seat: EPDM or PTFE
5- Pin: Stainless Steel
6- Epoxy Resin coating internal & external, thickness above 250 micron
7- Connection: Wafer type, lug type, flange type
8- Work pressure: PN10/16; Size Range: 2" to 72 "
9- Design Standard: DIN, EN558-1, API609; Top flange: ISO 5211; 
10- Operate: Handwheel or Worm Gear

Product Standard
- Design : BS5155, API609, BS EN593
- Flanges: BS4504, DIN2501, ASME16.1, JIS 5K/10K
- Face to face : DIN3202, BS EN558-1, ISO5752, ASME B16.1
- Top Flange: ISO5211
- Test : BS EN12266, API598

Dimensions(mm)

Size	L	A	B	D	C	H	ISO5211	n-φd PN10	n-φd PN16
DN100	127	155	114	220	180	225	F07	8-φ19	8-φ19
DN125	140	170	125	250	210	240	F07	8-φ19	8-φ19
DN150	140	190	143	285	240	260	F07	8-φ23	8-φ23
DN200	152	205	170	340	295	305	F10	8-φ23	12-φ23
DN250	165	235	198	405	355	335	F10	12-φ23	12-φ28
DN300	178	280	223	460	410	380	F10	12-φ23	12-φ28
DN350	190	310	279	520	470	410	F10	16-φ23	16-φ28
DN400	216	340	300	580	525	480	F14	16-φ26	16-φ31
DN450	222	375	345	640	585	530	F14	20-φ26	20-φ31
DN500	229	430	355	705	650	600	F14	20-φ26	20-φ34
DN600	267	500	410	840	770	676	F16	20-φ30	20-φ36
DN700	292	560	478	910	840	740	F25	24-φ30	24-φ36
DN800	318	620	529	1020	950	800	F25	24-φ33	24-φ39
DN1000	410	735	657	1225	1170	1045	F25	28-φ36	24-φ42