Pneumatic Wafer Butterfly Valve

Size Range: DN40–DN1000
Pressure Range: PN6–PN16
End Connection: Flanged or Wafer
Material: Carbon Steel/Fluorine-Lined
Seals: PTFE or FEP
Valves Design: Pneumatic Actuated Butterfly Valve
Face to Face: ISO 5752
Testing & Inspection: API 598 Standards
Suitable Medium: Corrosive liquids, gases, and chemical solutions

Product Overview

A pneumatic wafer butterfly valve is a compact, automated quarter-turn valve designed for efficient on/off and throttling control. Its wafer-style connection fits easily between flanges, while the pneumatic actuator delivers fast response, reliable sealing, and stable performance in water, HVAC, chemical, and industrial process systems.

Product Features

◆ Main Spare Part Bill of Materials

Serial No.	Part Name	Grey Cast Iron (Z)	Carbon Steel (C)	Stainless Steel (P)	Stainless Steel (R)	Low Carbon Stainless Steel (PL)	Low Carbon Stainless Steel (RL)
1	Upper and Lower Body	HT250	WCB	CF8	CF8M	CF3	CF3M
2	Disc	—	WCB	CF8	CF8M	CF3	CF3M
3	Butterfly Plates	1Cr13	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	00Cr18Ni10	00Cr18Ni14Mo2
4	Lining Layer / Seat	PTFE (F4), PCTFE (F3), FEP (F46), PFA (optional F4), PO (Polyolefin)
5	O-Ring	FPM (Fluorine Rubber/Viton)
6	Spring Section (Pad)	Si (Silicone Rubber)
7	Adjustment in Block	0Cr18Ni9	0Cr18Ni9	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	00Cr18Ni10	00Cr18Ni14Mo2
8	Bolt	35	35	1Cr17Ni2	1Cr17Ni2	1Cr18Ni9Ti	1Cr18Ni9Ti
9	Nut	45	45	0Cr18Ni9	0Cr18Ni9	0Cr18Ni9	0Cr18Ni9
10	Handle	ZL 101 (Cast Aluminum Alloy)

Specification Parameters

◆ Main Connection Dimension and Weight

Nominal Pressure: PN0.6MPa

DN (mm)	NPS (inch)	L (mm)	D (mm)	D1 (mm)	D2 (mm)	F (mm)	B (mm)	Z–ød (Bolts)	D0 (mm)	H1 (mm)	Weight (kg)
40	1 1/2	33	130	100	80	3	16	4–ø14	160	140	2.5
50	2	43	140	110	90	3	16	4–ø14	200	145	3.5
65	2 1/2	46	160	130	110	3	16	4–ø14	250	155	4.5
80	3	46	185	150	125	3	18	4–ø18	250	165	6
100	4	52	205	170	145	3	18	4–ø18	300	180	7.5
125	5	56	235	200	175	3	20	8–ø18	300	203	11
150	6	56	260	225	200	3	20	8–ø18	300	225	16
200	8	60	315	280	255	3	22	8–ø18	200*	275	48
250	10	68	370	335	310	3	24	12–ø18	200*	315	60
300	12	78	435	395	368	4	24	12–ø23	240*	348	75
350	14	85	485	445	412	4	26	12–ø23	240*	415	82
400	16	102	535	495	465	4	28	16–ø23	280*	460	123
450	18	114	590	550	518	4	28	20–ø23	320*	500	150
500	20	127	640	600	568	4	30	16–ø23	320*	530	180
600	24	154	755	705	670	5	30	20–ø25	320*	620	230
700	28	165	860	810	775	5	32	24–ø25	360*	675	315
800	32	190	975	920	880	5	34	24–ø30	360*	805	385
900	36	203	1075	1020	980	5	36	24–ø30	380*	995	420
1000	40	216	1175	1120	1080	5	36	28–ø30	400*	1170	620
1200	48	254	1400	1340	1295	5	40	32–ø34	400*	1295	788

Nominal Pressure: PN1.0MPa

DN (mm)	NPS (inch)	L (mm)	D (mm)	D1 (mm)	D2 (mm)	F (mm)	B (mm)	Z–ød (Bolt)	D0 (mm)	H (mm)	Weight (kg)
40	1 1/2	33	145	110	85	3	18	4–ø18	160	140	3
50	2	43	160	125	100	3	20	4–ø18	200	145	4
65	2 1/2	46	180	135	120	3	20	4–ø18	250	155	6
80	3	46	195	160	135	3	22	8–ø18	250	165	8
100	4	52	215	180	155	3	22	8–ø18	250	180	10
125	5	56	245	210	185	3	24	8–ø18	300	203	18
150	6	56	280	240	210	3	24	8–ø23	300	225	28
200	8	60	335	295	265	3	26	8–ø23	275	56	56
250	10	68	390	350	320	3	28	12–ø23	315	72	72
300	12	78	440	400	368	4	28	12–ø23	348	88	88
350	14	78	500	460	428	4	30	12–ø23	415	120	120
400	16	102	565	515	482	4	32	16–ø23	460	145	145
450	18	114	615	566	532	4	32	16–ø25	500	165	165
500	20	127	670	620	585	4	34	20–ø25	530	195	195
600	24	154	780	725	685	5	36	20–ø25	610	268	268
700	28	165	895	840	800	5	40	20–ø30	675	320	320
800	32	190	1010	950	905	5	44	24–ø30	805	395	395
900	36	203	1110	1050	1005	5	46	24–ø34	995	450	450
1000	40	216	1220	1160	1115	5	50	28–ø34	1170	680	680
1200	48	254	1450	1380	1325	5	56	32–ø41	1295	825	825

Nominal Pressure: PN1.6MPa

DN (mm)	NPS (inch)	L (mm)	D (mm)	D1 (mm)	D2 (mm)	F (mm)	B (mm)	Z–ød (Bolt)	D0 (mm)	H (mm)	Weight (kg)
40	1 1/2	33	145	110	85	3	18	4–ø18	200	145	4
50	2	43	160	125	100	3	20	4–ø18	250	150	5
65	2 1/2	46	180	145	120	3	20	4–ø18	250	160	7
80	3	46	195	160	135	3	22	8–ø18	250	170	10
100	4	52	215	180	155	3	24	8–ø18	300	185	14
125	5	56	245	210	185	3	26	8–ø18	300	210	22
150	6	56	280	240	210	3	28	8–ø23	320*	230	32
200	8	60	335	295	265	3	30	12–ø23	285	66	66
250	10	68	405	355	320	3	32	12–ø25	325	80	80
300	12	78	460	410	375	4	34	16–ø25	360*	94	94
350	14	78	520	470	435	4	38	16–ø25	460	125	125
400	16	102	580	525	482	4	40	16–ø30	475	150	150
450	18	114	655	585	545	4	44	20–ø30	525	172	172
500	20	127	720	650	608	4	46	20–ø34	565	225	225
600	24	154	840	770	718	5	50	24–ø41	660	290	290
700	28	165	910	840	788	5	54	24–ø41	686	330	330
800	32	190	1020	950	898	5	54	24–ø41	815	425	425
900	36	203	1120	1050	998	5	54	28–ø41	1010	495	495
1000	40	216	1255	1170	1110	5	60	28–ø48	1100	650	650

Notes

Flange Size D, D1, D2, Z–ød, B, L values are based on standard flange dimensions for butterfly valves. Sketch in the size of code is only part of it.
For PN1.0MPa, Z = 8 according to JB78/82 standard; for other pressures Z = 4.

* Flange size D, D1, D2, Z–ød, B, L values are connected with a standard butterfly valve flange size. Sketch in the size of code is only part of it.

Specification Applications

Chemical and Petrochemical Industries: For controlling corrosive or abrasive media.
Water and Wastewater Treatment: Provides reliable on/off or throttling service with minimal maintenance.
HVAC Systems: Used in heating and cooling water control systems.
Pulp and Paper: Handles slurry and fibrous media effectively.
Power Generation: Suitable for auxiliary and cooling water lines.
Food & Beverage / Pharmaceutical: When fitted with hygienic-grade materials and linings.

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

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