Edrv Dynamic Balance Electric Regulating Valve

• Temperature: Ordinary Temperature
• Certification: GS
• Media: Gas, Oil, Water, Acid
• Standard: Standard
• Connection Mode: Flange
• Power: Manual
• Model NO.: EDRV
• Material: Stainless Steel
• Type: Self-Operated
• Use: Adjust
• Pressure: Normal Pressure
• Port of Ningbo: Class IV (Standard, Metal Seat)
• Body Type: Straight Through, Angle, Z Shape
• Transport Package: Wooden Box
• Specification: DN15-DN500
• Trademark: xc
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000

Product Description

EDRV series dynamic balance electric regulating valve reliable quality, reasonable price, perfect after-sales service. "Electric dynamic balance valve" is suitable for various light and heavy industries and building pipelines. [Balance valve/central air conditioning end control valve] widely used in: chemical, petrochemical, petroleum, paper, mining, power, liquefied gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment supporting, electronic industry, urban construction and other fields.
Electric control valve characteristics
[Balance valve/control valve] the principle is the anti-regulation in the valve body, when the pressure at the entrance increases, the diameter is automatically reduced to reduce the change of flow rate, and vice versa. If the reverse adjustment, this adjustment system does not work. And the valve plate that plays the regulating role is directional, and the reverse pressure can even reduce or even close the flow. Since the balancing valve is installed for better heating, there is no problem of reverse installation. If it is reverse installation, it is a human error, and of course it will be corrected. The balance valve belongs to the regulating valve category, its working principle is to change the gap between the valve core and the seat (that is, the opening), change the flow resistance of the fluid flowing through the valve, to achieve the purpose of regulating the flow rate.

EDRV series electric regulating valve working principle

Dynamic balance and electric regulating valve integration products. Its working principle is shown in Figure 1, in the variable flow system with large fluctuations in system load, when the system pressure changes, the differential pressure (P1-P3) at the two ends of the dynamic balance electric regulating valve also changes:
Electric regulating valve schematic description:
(1) When the import pressure P1 rises, (P1-P2) increases, then the electric valve spool moves upward, so that the opening between P1 and P2 is reduced, and the spool pressure P2 is reduced; When the import pressure P1 is reduced, (P1-P2) is reduced, then the electric valve spool downward movement, so that the opening between P1 and P2 is increased, and the spool pressure P2 is increased. Therefore, no matter how the pressure of the system changes, through the adjustment of the electric valve spool, the pressure difference between P2 and P3 always remains unchanged. Therefore, the dynamic valve has strong anti-interference ability and dynamic balance function; (2) When the direct stroke electric actuator accepts the control signal to make the valve shaft extend A-B up and down (or the Angle stroke electric actuator accepts the control signal to make the valve shaft extend R to rotate), the opening between P2 and P3 also changes. Because no matter how the system pressure difference (P1-P3) changes, the pressure difference between P2 and P3 (P2-P3) is always the same, so corresponding to any opening position, the water flow rate is certain, and the actual flow characteristic curve of the electric control valve is consistent with its ideal flow characteristic curve, without deviation. Therefore, this kind of electric regulating valve has better regulating characteristics than the traditional electric regulating valve.

EDRV series electric regulating valve main parts material

 

Valve body	Nodular cast iron	Electric actuator housing	Aluminum alloy
Valve sleeve	Stainless steel	Spool	Orichalcum

Technical parameters of EDRV series electric regulating valves

 

Product model	Valve form	Specifications	Differential pressure range (KPa)	Flow range (m0/h)	Work Stress	Flow Error	Fluid Temperature
A/D-EDRV1	two-way	DN25	30-300.	0.2-2.9	PN16	5%	0-100 ºC
A/D-EDRV2	DN32	30-300.	0.5-4-7
A/D-EDRV3	DN40	30-300.	The 1-7-7
A/D-EDRV4	DN50	30-300.	2-12.1
A/D-EDRV8	DN65	30-300.	3-20.4 -
A/D-EDRV9	DN80	30-300.	5-30.8 -
A/D-EDRV10	DN1OO	30-300.	10-45.3 -
A/D-EDRV11	DN125	30-300.	15-70-7
A/D-EDRV12	DN150	30-300.	20-101.8
A/D-EDRV13	DN200	33-300.	5.0-360.
A/D-EDRV14	DN250	22-210.	4.O-460

EDRV series electric regulating valve mounting size

 

Mounting dimension

Product model number	Valve form	Specifications	Outline and mounting dimensions (mm)
L	H1	H2	D (φ) flange	G thread
A/D-EDRV1	Bipass Wire orifice	DN25	160	265	70		G1
A/D-EDRV2	DN32	180	275	70		G1-1/4
A/D-EDRV3	DN40	300	290	90		G1-1/2
A/D-EDRV4	DN50	300	290	90		G2
A/D-EDRV5	Bipass Flange	DN32	160	220	70	1OO
A/D-EDRV6	DN40	200	235	110	110
A/D-EDRV7	DN50	215	230	115	125
A/D-EDRV8	DN65	230	238	120	145
A/D-EDRV9	DN80	275	275	146	160
A/D-EDRV10	DNl00	290	295	165	180
A/D-EDRV11	DNl25	315	307	208	21O
A/D-EDRV12	DNl50	350	326	205	240
A/D-EDRV13	DN200	430	715	295	295
A/D-EDRV14	DN250	520	740	345	355