Name:

Manual Eccentric Hemispherical Valve

Category：

Ball valve

Remark:

Manual eccentric hemispherical valve using eccentric valve body, eccentric ball and valve seat, valve stem for rotary movement in the common trajectory automatic centering, the process of closing the more off the more tight, fully achieve the purpose of a good seal. Valve ball and seat completely separated, eliminating the wear ring, to overcome the traditional ball valve seat and the ball sealing surface is always worn problem, non-metallic elastic material is embedded in the metal seat, the valve seat metal surface is well protected. This product is especially suitable for steel, aluminum, fiber, tiny solid particles, pulp, coal ash, LPG and other media.

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Product Details

Product Usage

Features

1. Its structure adopts the principle of eccentric tightness to achieve the purpose of tightening, adjusting and closing through the transmission mechanism. The sealing pair is a hard-surface contact seal of a metal surface ring belt. When the double eccentric structure is opened, the valve core is located in a Tibetan ballroom, , And the valve is not washed, the valve core is not washed off when closed, open when the valve core gradual progress along the valve seat, the effective removal of scaling obstacles to achieve a reliable seal. It is particularly effective for mixed flow delivery of two-phase flow-prone fouling solids

2. The valve hemisphere with bimetallic, base metal surfacing on different alloys, the valve seat is also the corresponding surfacing by special treatment, the sealing surface into anti-corrosion, wear-resistant, high strength and other types to meet the needs of different occasions

3. Sealed tightly, delivering zero harmful gas leakage

4. The seal of the spool left compensation, when the valve to do wear, turn off a little while, can be reliably sealed, extending the service life. In addition, the user will squeeze the nut twist off, adjust or replace the valve seat is still available, to avoid the failure of the valve seal, the entire scrap defects.

Performance Parameters

Material properties	Material code
	WCB	304	316	304L	316L	321
	ZG230	0Cr18Ni9（CF8）	1Cr18Ni12Mo2Ti	00Cr18Ni10	00Cr17Ni14Mo2	ZG7Cr18Ni9T
	ZG230	0Cr18Ni9（CF8）	（CF8M）	（CF3）	（CF3M）	（F347）
Suitable media	Water, oil, steam	Nitric acids	Acetic acid	Strong oxidizing medium	Urea and other corrosive media	Nitric acids
Test range Mpa
Project	Nominal pressure	Shell pressure test	Sealed test	On the seal test	Low pressure seal test	Flaw test
Test medium		Water Mpa	Water Mpa	Water Mpa	Gas Mpa	GB/T6440-1992
Time	（S）	120	60	60	0.5~0.6
Pressure test	1.0Mpa	1.5	1.1	1.1
	1.6Mpa	2.4	1.76	1.76
	2.5Mpa	3.75	2.75	2.75

Main connection size

PN	DN	L	D	K	d	Y	b	Z-d0	Ws	Hs	Hw	Hd
1.6MPa	40	165	145	110	85	-	16	4-18	230	135	-	-
	50	203	160	125	100	-	16	4-18	260	150	-	-
	65	222	180	145	120	-	18	4-18	350	180	-	-
	80	241	195	160	135	-	20	8-18	500	195	-	-
	100	305	215	180	155	-	20	8-18	650	245	310	420
	125	356	245	210	185	-	22	8-18	800	270	330	440
	150	394	280	240	210	-	24	8-23	1000	295	390	470
	200	457	335	295	265	-	26	12-23	-	-	440	510
	250	533	405	355	320	-	30	12-25	-	-	490	560
	300	610	460	410	375	-	30	12-25	-	-	530	600
	350	686	520	470	435	-	34	16-25	-	-	620	670
	400	762	580	525	485	-	36	16-30	-	-	675	720
	450	864	640	585	545	-	40	20-30	-	-	740	790
	500	914	705	650	608	-	44	20-34	-	-	825	870
	600	1067	840	770	718	-	48	20-41	-	-	920	960
2.5MPa	40	190	145	110	85	-	18	4-18	230	135	-	-
	50	216	160	125	100	-	20	4-18	260	150	-	-
	65	241	180	145	120	-	22	8-18	350	180	-	-
	80	283	195	160	135	-	22	8-18	500	195	-	-
	100	305	230	190	160	-	24	8-23	650	245	310	420
	125	381	270	220	188	-	28	8-25	800	270	330	440
	150	403	300	250	218	-	30	8-25	1000	295	390	470
	200	502	360	310	278	-	34	12-25	-	-	440	510
	250	568	425	370	332	-	36	12-30	-	-	490	560
	300	648	485	430	390	-	40	16-30	-	-	530	600
	350	762	550	490	448	-	44	16-34	-	-	620	670
	400	838	610	550	505	-	48	16-34	-	-	675	720
	450	914	660	600	555	-	50	20-34	-	-	740	790
	500	991	730	660	610	-	52	20-41	-	-	825	870
	600	1143	840	770	718	-	56	20-41	-	-	920	960
4.0MPa	40	190	145	110	85	76	18	4-18	230	135	-	-
	50	216	160	125	100	88	20	4-18	260	150	-	-
	65	241	180	145	120	110	22	8-18	350	180	-	-
	80	283	195	160	135	121	22	8-18	500	195	-	-
	100	305	230	190	160	150	24	8-23	800	250	320	430
	125	381	270	220	188	176	28	8-25	1000	280	340	450
	150	403	300	250	218	204	30	8-25	1200	300	405	480
	200	502	375	320	282	260	38	12-30	-	-	450	530
	250	568	445	385	345	313	42	12-34	-	-	505	590
	300	648	510	450	408	364	46	16-34	-	-	545	620
	350	762	570	510	465	422	52	16-34	-	-	640	690
	400	838	655	585	535	474	58	16-41	-	-	690	740
	450	914	680	610	560	524	60	20-41	-	-	760	810
	500	991	755	670	612	576	62	20-48	-	-	850	900
6.4MPa	40	241	165	125	95	76	24	4-23	260	140	-	-
	50	292	175	135	105	88	26	4-23	260	160	-	-
	65	330	200	160	130	110	28	8-23	350	180	-	-
	80	356	210	170	140	121	30	8-23	500	220	-	-
	100	406	250	200	168	150	32	8-25	800	250	320	430
	125	450	295	240	202	176	36	8-30	1000	295	340	450
	150	495	340	280	240	204	38	8-34	1200	340	405	480
	200	597	405	345	300	260	44	12-34	-	-	450	530
	250	673	470	400	352	313	48	12-41	-	-	505	590
	300	762	530	460	412	364	54	16-41	-	-	545	620
	350	826	595	525	475	422	60	16-41	-	-	640	690
	400	902	670	585	525	474	66	16-48	-	-	690	740
	500	1054	800	705	640	576	70	20-54	-	-	760	810

Structure picture

Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at info@cnlgvalve.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.

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Manual Eccentric Hemispherical Valve

Ball valve

Product Details

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