Pneumatic Diaphragm Valve

The Pneumatic Diaphragm Valve is essentially a simple pinch clamp, closed by pressing a flexible diaphragm against transverse weir, when fully closed, the diaphragm seats against the weir providing a leak-tight closure. It is extensively used for both On/Off and throttling services and finds its application in Waste & Water Treatment Plants, Filtration Plants, Chlorination Plants etc.

DESIGN	Confirm to BS – 5156
BODY TYPE	Weir (Rubber Lined – Series MVS 521) (Unlined – Series MVS 541) (PFA Lined – Series MVS 551)
VALVE SIZE	15mm to 300mm (1/ 2″ to 12″)
END CONNECTION	ANSI B 16.1Class 150
BODY MATERIAL	Cast Iron (IS 210 grade FG 200) Cast Steel, Other alloys on request.
LINING MATERIAL	Ebonite, PVDF, PFA, PP, EPDM, Glass etc.
LINING HARDNESS	Ebonite-95° ± 5 Shore A Natural/Neo Rubber-55° ± 5 Shore A PTFE-Rockwell/Shore R100 D78 or D62 Glass lining & FRP-Parcol Parcel 40 Respectively.
LINING THICKNESS	15 to 65 mm Valve – 3.0 mm 80 to 100 mm Valve – 3.5 mm 125 to 150 mm Valve – 4.0 mm 200 to 300 mm Valve – 5.0 mm PTFE Coating Thickness – 800 micron, Glass Lining – 1.5mm.
BODY DIAPHRAGM	Neoprene, PTFE Backed with Neoprene Butyl, Viton, Hyplon, Nitrile, EPDM.
LEAKAGE RATE	As per ANSI B 16.104 Class VI (100% Leak tight.)
TEMPERATURE	– 30°C to 80°C
FLOW CHARACTERISTICS	May be adjusted throughout a spring range by turning the adjusting screw.
TESTING STANDARD	BS 6755 Part – I
ACTUATOR TYPE	Diaphragm or Motorized or Cylinder
ACTUATOR ACTION	Direct Acting – Normally Open (Air to Close) Reverse Acting – Normally Close (Air to Open)
SPRING RANGE	3 – 15 PSIG (0.2 – 1.0 Kg/cm2) 8 – 20 PSIG (0.4 – 2.0 Kg/cm2) 18 – 30 PSIG (1.2 – 2.0 Kg/cm2)
AIR SUPPLY	20-50 PSIG (1.4-3.5 Kg/cm2)
AIR CONNECTION	1/ 4″ or 1/ 2″ NPT
ACCESSORIES OPTIONAL	Top or Side Mounted Handwheel, Limit Switches Airset, Valve Positioner etc.

ACTUATOR DIMENSIONS

ACTUATOR MODEL	EFFECTIVE Inch2	BONNET MOUNT DIA.	TRAVEL	ФD	H	H1	H2	H3	H4	H5
MVS-R 251	140	90.5	70	443	-	870	-	890	-	1000
MVS-D 251	140	90.5	70	443	750	-	1000	-	1000	-
MVS-R 411	300	90.5	45	599	-	980	-	-	-	1230
MVS-D 411	300	90.5	45	599	950	-	-	-	1230	-
MVS-R 411	300	90.5	70/76	599	-	1070	-	-	-	1275
MVS-D 411	300	90.5	70/76	599	950	-	-	-	1275	-
MVS-R 123	12	32	14.3	150	-	370	-	365	-	-
MVS-D 123	12	32	14.3	150	235	-	335	-	-	-
MVS-R 141	30	32	19	218	-	440	-	400	-	-
MVS-D 141	30	32	19	218	295	-	390	-	-	-
MVS-R 141	30	54	32	218	-	510	-	520	-	-
MVS-D 141	30	54	32	218	325	-	475	-	-	-
MVS-R 166	55	54	28	286	-	550	-	570	-	640
MVS-D 166	55	54	28	286	410	-	540	-	640	-
MVS-R 166	55	54	38	286	-	570	-	590	-	690
MVS-D 166	55	54	38	286	325	-	510	-	690	-
MVS-R 106	95	54	32	371	-	680	-	700	-	670
MVS-D 106	95	54	32	371	430	-	770	-	670	-
MVS-R 106	95	54	45	371	-	700	-	720	-	725
MVS-D 106	95	54	45	371	590	-	550	-	725	-
MVS-R 251	140	54	38	443	-	840	-	640	-	860
MVS-D 251	140	54	38	443	750	-	1000	-	860	-

Operates automatically off line pressure.
Heavy-duty, nylon-reinforced diaphragm.
Round-shaped, soft seat seal provides drip-tight class VI closure.
Diaphragm assembly guided top and bottom.

BODY DIMENSIONS

Size (mm)	F/F Lined	F/F Unlined	H1	L	H	ØZ
250	645	635	204	559	229	69.8
300	759	749	242	651	229	69.8
15	114	108	45	75	117	31.7
20	123	117	50	85	117	31.7
25	133	127	55	97	117	31.7
32	152	146	60	90	117	31.7
40	162	159	70	110	117	31.7
50	196	190	75	135	117	53.9
65	222	216	90	155	143	53.9
80	261	254	95	175	143	53.9
100	312	305	115	200	143	53.9
125	346	350	125	230	143	53.9
150	414	406	140	360	197	69.8
200	531	521	175	370	197	69.8

Pneumatic Diaphragm Valve

ACTUATOR DIMENSIONS

BODY DIMENSIONS

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© Mayur (Valves) System Private Limited 2020 All Rights Reserved

Pneumatic Diaphragm Valve

ACTUATOR DIMENSIONS

BODY DIMENSIONS

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© Mayur (Valves) System Private Limited 2020 All Rights Reserved