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Our company's new type of eccentric valve is designed and manufactured by our company.

The elastic sealing structure of the valve overcomes the defects of poor sealing performance and easy corrosion of the traditional cock code. The unique eccentric seal design greatly reduces the operating torque compared with the traditional plug valve, and Zui greatly reduces the wear of the sealing surface and prolongs the service life of the valve. The rectangular straight channel has small head loss and good flow regulation linearity. It has excellent sealing and corrosion resistance, ideal operation performance and long service life. It is suitable for urban sewage, industrial sewage, mud and clean water and other working environment as a closure or regulation device.

Eccentric seal design There is an eccentricity between the valve sealing surface center and the cock rotating shaft. Using the principle of eccentric movement, the closer the cock and the valve seat are, the closer the valve is sealed; when the valve is opened, the cock and the valve seat can be separated quickly without contact wear, and the valve has a long service life.	閥體剖面圖
Integral rubber covered cock Nodular cast iron cock frame is coated with high-performance rubber, which has good sealing elasticity, and has no worries of rubber falling off and erosion corrosion.
Special corrosion resistant valve seat According to the different working medium, the valve seat can be made of pure nickel, stainless steel or other special materials, and the valve body is compounded with new surface treatment technology. The combination is firm and can resist erosion and corrosion of various media.
Rectangular straight channel Through flow channel makes the head loss of valve very small; the flow section of valve seat is rectangular, which can obtain linear adjustment of flow rate; the larger geometric size of rectangle and the self flushing design of flow channel are more suitable for sewage or occasions containing solid impurities.
Integrated bow valve shaft The valve shaft and plug are integrally cast into shape, with high strength and load transmission rigidity, thus eliminating the danger of failure of the traditional plug valve shaft pin. Compared with the traditional plunger, the arcuate cock can reduce the weight by nearly half, avoid the flow channel when the valve is fully open and has the function of guiding.
Light and compact structure The valve body is made of high strength ductile iron, and the weight is reduced by more than 20% compared with the traditional plug valve. The short distance between the valve faces shortens the residence time of the fluid in the flow passage, and the increase of the fluid velocity reduces the deposition of impurities.
Corrosion resistant surface treatment The inner and outer surface of the valve is sprayed with non-toxic epoxy resin to prevent the valve body from rusting. It is suitable for sewage system, outdoor and underground environment.

 

Part number	name	texture of material
1	valve body	Ductile iron
2	Cock	Nodular cast iron coated with NBR or EPDM
3	valve seat	Pure nickel, stainless steel or special materials
4	O-ring	NBR
5	Bearing	Bronze or Brass
6	Valve cover	Ductile iron
7	V-ring	NBR
8	Gland	Ductile iron

Full open position Straight flow channel, self flushing design, not easy to accumulate impurities. The shape of the eight mouth spines was restored to the ideal shape.	Adjust the position The valve can adjust the flow rate at any opening, the cock diversion effect is obvious, and the flow regulation linearity is good. During adjustment, there is no contact wear between the cock and the valve seat.	Fully closed position The higher the pressure, the better the sealing performance. The more eccentric movement, the closer the cock and valve seat are. The forward seal is completely zero leakage.

 

Technical characteristics	characteristic parameter
characteristic parameter（℃）	0～65℃
Nominal sizeDN（mm	50～900
Nominal pressurePN（mm）	1.0	1.6
Strength test pressure（MPa	1.5	2.4
Strength test pressure（MPa	1.1	1.76
Suitable working medium	Sewage, raw water, clean water, oil（NBR）
Suitable working medium

 

Comparison of flow resistance characteristics At the same flow rate, the pressure loss and energy consumption of the plug valve are small, and with the increase of valve size, this advantage is more obvious.	Flow characteristics When used as a control valve, the valve opening percentage has a linear relationship with Zui large flow percentage, and the valve flow can be controlled according to the opening indicator.

 

DN	D1		D2		D3		C		n-d		m-Mxh		L	H1	H2
	PN10	PN16	PN10	PN16	PN10	PN16	PN10	PN16	PN10	PN16	PN10	PN16	178	84	PLVL型	PLVC型	PLVG型	PLVE型	PLVP型
50	165		125		99		19		4-φ19		—		190	93	143	225	265	315	265
65	185		145		118		19		4-φ19		—		203	109	143	225	265	315	265
80	200		160		132		19		4-φ19		4—M16通孔		229	128	174	225	312	373	340
100	220		180		156		19		8-φ19		—		229	128	174	225	312	373	340
125	250		210		184		19		8-φ19		—		267	165	174	225	312	373	340
150	285		240		211		21		4-φ23		4—M16通孔		292	198	—	340	444	481	488
200	340		295		266		21		4-φ23	8-φ23	4-M20通孔	4-M20深25	330	249	—	—	464	508	558
250	395	405	350	355	319		24		8-φ23	8-φ28	4-M20深30	4-M24深35	356	290	—	—	527	630	729
300	445	460	400	400	370		25		8-φ23	8-φ28	4-M20深30	4-M24深35	432	330	—	—	710	666	729
350	505	520	460	470	429		26	26.5	8-φ23	8-φ28	4-M20深30	4-M24深35	450	355	—	—	723	767	—
400	565	580	515	525	480		28		8-φ23	8-φ31	8-M24深36	4-M27深40	450	355	—	—	749	881	—
450	615	—	565	—	530	—	28	—	12-φ28	—	8-M24深36	—	450	355	—	—	749	881	—
500	670	—	620	—	582	—	29	—	12-φ28	—	8-M24深36	—	660	427	—	—	903	1015	—
600	780	—	725	—	682	—	30	—	12-φ31	—	8-M27深40	—	762	567	—	—	1015	1202	—
700	895	—	840	—	794	—	32.5	—	16-φ31	—	8-M27深40	—	865	633	—	—	1393	1351	—
800	1015	—	950	—	901	—	35	—	16-φ34	—	8-M30深45	—	965	633	—	—	1393	1351	—
900	1115	—	1050	—	1001	—	37.5	—	28-φ34	—	—	—	1424	860	—	—	1902	1892	—

remarks:
1. Flange connection dimension shall be made according to PN10 / 16 of GB / t17241.6-1998 standard
2. Manufacture of series 3 of structural length L parameter gb-12221-89
3. The operating height of the valve varies with the selection of different operators. The worm wheel type operation hand wheel can be replaced by a driving cap;
4. The above are our standard products. If you have special requirements, please contact the business department or agent;