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Butterfly Valves for Seawater

Design features (Characteristic)

Easy adjustable mechabism of rubber

We have done unitied protect device after valve rubber seat adjusted. Also we minimized the projected rubber parts in order to protect felling off of perfomance index by transformation of rubber seat when reserve pressure make an effect to valve.

Disc positioning mechanism

To protect sink or rising of disc, we settled adjusting bolt underside of valve bottom stage. Also, it rotected one side wear of disc seat part and then increased the performance index of valve.

Shaft locking device

We have settled shaft locking device to protect valve disc revolution when you disassemble the valve operation apparatus(worm gearbox) due to maintenance or interference of the valve operation apparatus at the time of big valve installation.

Construction

Material

No	Description	Material
1	Body	ALUMINUM BRONZE ASTM B148 CA95800
2	Disc	ALUMINUM BRONZE ASTM B148 CA95800
3	Disc Seat	RUBBER CR
4	Seat Retainer	ALUMINUM BRONZE ASTM B148 CA95800
5	Shaft	NA18 Nickel-copper-aluminium alloy Monel K-500
6	Bottom Cover	ALUMINUM BRONZE ASTM B148 CA95800
7	Stand	Ductile iron: GCD450
8	Gear Box	ASS’Y
9	Cap	Ductile iron: GCD450

Dimensions	Flanges to KWWA, DIN F4 and F5, GOST, SABS, AS, BS and AWWA standards

ND	ØD	ØC	n-Øh	L	t	A	B	X	Y	Y1	Z	8-Øh1	H	L1	L2	L3	L4
500	839	S35	20-Ø32	203	42.9	430	560						73	140	202	413	150
800	813	749	20-Ø35	203	47.6	491	639	400	540	60	70	8-29	73	140	202	413	150
700	927	884	28-Ø35	305	33.3	555	715	4eo	600	60	100	8-29	90	175	257	476	185
800	1060	978	28-Ø42	305	38.1	620	795	520	670	60	100	8-29	90	175	257	478	185
900	1168	1086	32-Ø42	305	60.3	685	875	580	730	SO	100	8-29	125	240	359	621	228
1000	1286	1200	3S-Ø42	305	66.7	747	955	650	800	100	100	8-42	125	240	359	621	228
1100	1403	1314	40-Ø42	381	44.5	810	1045	710	900	100	130	8-42	125	240	359	621	228
1200	1511	1422	44-Ø42	381	69.9	868	1140	770	1000	100	130	8-42	155	285	426	700	285
1350	1683	1594	44-Ø42	381	76.2	960	1240	850	1200	100	130	8-42	155	285	426	700	285
1500	1854	1759	52-Ø51	381	79.4	1050	1345	930	1220	150	130	8-42	155	285	426	700	285
1650	2032	1930	52-Ø51	457	83.5	1145	1450	1010	1330	150	150	8-42	200	450	455	850	455
1800	2197	2096	60-Ø51	457	88.9	1240	1555	1100	1440	150	150	8-42	200	450	455	850	455
2000	2362	2261	64-Ø58	508	95.3	1360	1690	1200	1600	200	160	8-42	250	750	490	1036	490
2100	2534	2426	64-Ø58	508	98.4	1440	1770	1250	1700	200	160	8-42	250	750	490	1036	490
2300	2705	2591	68-Ø63.5	508	78.2	1550	1880	1350	1900	200	160	8-42	250	750	490	1036	490
2400	2877	2756	68-Ø83.5	559	108	1610	1940	1400	2000	200	200	8-42	250	750	490	1038	490
2600	3048	2908	72-Ø83.5	559	82.6	1750	2100	1480	2200	200	200	8-42	250	750	490	1038	490
2700	3219	3067	72-Ø63.5	559	82.8	1820	2180	1520	2300	200	200	8-48	310	1020	680	1311	680
2900	3391	3219	78-Ø75	559	88.9	1939	2350	1600	2500	200	200	8-48	310	1020	680	1311	680
3000	3562	3372	78-Ø75	559	88.9	2000	2410	1650	2600	200	200	8-48	310	1020	680	1311	680
3200	3734	3537	80-Ø82	610	95.3	2110	2520	1750	2800	250	240	8-48	310	1020	680	1311	680
3400	3905	3702	80-Ø82	610	98.4	2224	2640	1850	2900	250	240	8-48	310	1020	680	1311	680
3500	4077	3861	84-Ø88	610	101.6	2285	2700	1900	2950	250	240	8-48	310	1020	880	1311	680
3700	4248	4020	84-Ø88	610	104.8	2409	2820	2000	3000	250	240	8-48	310	1020	680	1311	680
4000	4740	4430	76-Ø81	711	80	2560	2890	2400	3280	250	300	8-60	310	690	870	900	640