Top entry eccentric hemispherical valve (electric)-Electric valve series-电动阀厂家-上海冠环阀门制造有限公司

Product Overview

The upper eccentric hemisphere valve adopts the principle of eccentric structure, and achieves the purpose of locking, adjusting, and closing through the transmission mechanism. The double eccentric structure ball valve is hidden in the valve chamber when opened, with a large flow load surface. When closed, the spherical surface of the valve core gradually moves along the valve seat, with shear function, effectively removing scaling obstacles and achieving reliable sealing. Suitable for wastewater treatment, pulp, alumina, urban heating, oil products, natural gas, liquid solid two-phase mixtures, or media prone to chemical crystallization.

Product Features
1. Tightly sealed, delivering harmful gases with zero leakage.
2. The hemisphere of the valve is made of bimetallic material, with different alloys overlaid on the base material. The valve seat is also subjected to corresponding welding and special treatment to meet the needs of different occasions.
3. The valve core of the sealing pair has a compensation amount left, and when the valve is worn out, it can be reliably sealed by turning a little more when closed, extending its service life.
4. Its structure adopts the eccentric compression principle to achieve the purpose of locking, adjusting, and closing through the transmission mechanism.

Main performance specifications

nominal pressure		0.6	1.0	1.6	2.0	2.5	4.0	5.0	6.4	10
Shell Test Pressure		0.9	1.5	2.4	3.0	3.8	6.0	7.5	9.6	15
High pressure sealing test		0.66	1.1	1.8	2.2	2.8	4.4	5.5	7.1	11
Applicable medium and temperature℃	DYQ40type	Solutions such as water, steam, pulp, etct≤180℃
	DYQ40type	Natural gas, gas, liquefied gas, crude oil, heavy oil t ≤425℃
	DYQ40type	Solution, slurry, aluminum oxide powder, coal powder, coal ash, dusty gas, waste residue, etc t ≤300℃

Main component materials

Part Name	DYQ40 type	DYQ40 type	DYQ40 type
valve body	Carbon steel WCB/stainless steel CF8	Carbon steel WCB/stainless steel CF8	Carbon steel WCB/stainless steel CF8
valve stem	2Cr13/304	2Cr13/304	2Cr13/304
Valve core sealing pair	WCB/CF8+Cr	WCB/CF8+Hardened alloy steel	Special hardened alloy steel JK117/17Co alloy
Valve seat sealing pair	PTFE/Molon	WCB/CF8+Hardened alloy steel	Special hardened alloy steel JK117/17Co alloy

nominal pressure PN	Nominal Diameter DN（mm）	Size（mm）
nominal pressure PN	Nominal Diameter DN（mm）	L	D	K	d	b	z-d0	Hw	Hd
1.0MPa	100	229	220	180	156	22	8-φ18	330	380
	125	254	210	210	184	22	8-φ18	345	405
	150	267	240	240	211	24	8-φ22	370	440
	200	292	295	295	266	24	8-φ22	405	470
	250	330	350	350	319	26	12-φ22	480	540
	300	403	400	400	370	26	12-φ22	520	580
	350	430	460	460	429	26	16-φ22	570	630
	400	530	515	515	480	26	16-φ26	630	710
	450	580	565	565	530	28	20-φ26	690	770
	500	660	620	620	582	28	20-φ26	740	820
	600	840	725	725	682	34	20-φ30	840	940
	700	900	840	840	794	34	24-φ30	960	1040
	800	1000	950	950	901	36	24-φ33	1080	1180
	900	1100	1050	1050	1001	38	28-φ33	1190	1280
	1000	1200	1160	1160	1112	38	28-φ36	1310	1420
	1200	1300	1380	1380	1328	44	32-φ39	1420	1530
	1400	1500	1590	1590	1530	48	36-φ42	1540	1650
1.6MPa	100	229	180	180	156	22	8-φ18	330	380
	125	254	210	210	184	22	8-φ18	345	405
	150	267	240	240	211	24	8-φ22	370	440
	200	292	295	295	266	24	12-φ22	405	470
	250	330	355	355	319	26	12-φ26	480	540
	300	403	410	410	370	28	12-φ26	520	580
	350	430	470	470	429	30	16-φ26	570	630
	400	530	525	525	480	32	16-φ30	630	710
	450	580	650	585	548	40	20-φ30	690	770
	500	660	770	650	609	44	20-φ33	740	820
	600	840	840	770	720	54	20-φ36	840	940
	700	900	950	840	794	40	24-φ36	960	1040
	800	1000	1050	950	901	42	24-φ39	1080	1180
	900	1100	1125	1050	1001	44	28-φ39	1190	1280
	1000	1200	1255	1170	1112	46	28-φ42	1310	1420
	1200	1300	1485	1390	1328	52	32-φ48	1420	1530
	1400	1500	1590	1590	1530	58	36-φ48	1540	1650