Product Details

Product Description

D660 series servo proportional control valve is used in two-way, three-way, four-way and five way throttle type flow control valve. These valves are suitable for electro-hydraulic position, speed, pressure or electro-hydraulic control system, as well as other control occasions requiring high dynamic response requirements. The control circuit in D660 series valve is also an innovation of our company. It adopts SMD technology and 24VDC power supply.

- significantly improve the flow utilization efficiency (more than 90% of the pilot flow is used), which helps to reduce energy consumption, especially for machines using multiple servo proportional valves. - the servo jet pipe pilot valve has a high undamped natural frequency (500Hz), so the dynamic response of this valve is high. - reliable performance. The servojet pilot valve has a high pressure efficiency (when the input full calibration signal, the pressure efficiency is more than 80%), and it can also obtain ideal control force for the long stroke main valve core, so that even if there is pollution and hydrodynamic interference, it can also obtain a very reliable position accuracy. - the minimum control pressure of the pilot stage is only 25bar, which makes the servo proportional control valve even applicable to low-pressure systems such as turbine control. - the nominal clearance of the built-in filter of the servojet pilot valve is 200um, so its service life is almost unlimited. - based on the relatively flat pressure gain characteristics of the servo jet pipe pilot valve, it has impeccable working performance. With the increase of the loop gain, the valve has excellent static and dynamic response characteristics, and the performance of the control system is significantly improved.

Technical Parameters

Model... Type				D661-P/B...A	D661-P/B...B
Installation form	Meet ISO standard, one more t port			ISO 4401-05-05-0-05
Types of valves				"Four way, 2 * 2 way and five way The second stage is the standard slide valve“
Pilot valve	ServoJet			Standard flow rate	Large flow rate
Pilot connection	Internal control (row) or external control (row) can be selected**			X port and Y port	X port and Y port
weight			KG（1b)	5.6（12.3）	5.6（12.3）
Rated discharge	（±10%）△PN=5bar（75psi)/ Every throttling edge“	1/min (gpm)	30/60/80/280 （7.9、15.9、12.1、221.1）	30/60/80/280 （7.9、15.9、12.1、221.1）
Working pressure	Maximum
Main valve	Port P, port a and port B	bar(psi)	350（5080）	350（5080）
		Port t (inner row of port y)	bar(psi)	210（3050）	210（3050）
		Port t (outlet y)	bar(psi)	350（5080）	350（5080）
Pilot valve	standard	bar(psi)	280（4060)	280（4060)
		With pressure reducing orifice	bar(psi)	350(5080)	350(5080)
		(selected according to user requirements)
Response time*	0-100% spool displacement, typical	ms	28	18
Minimum resolution*			%	<0.05	<0.05
Hysteresis *			%	<0.3	<0.3
Zero drift	△T=55K	%	<0.1	<0.1
Zero leakage*	Total leakage (~ zero cover)	1/min(gpm)	3.5(0.9)	4.4(1.2)
Pilot leakage*	Pilot valve only, typical	1/min(gpm)	1.7(0.5)	2.6(0.7)
Pilot flow	Maximum flow under full open step signal input	1/min(gpm)	1.7(0.5)	2.6(0.7)
Stroke of main valve element			mm(in)	±3（0.1）	±3（0.1）
Driving area of main valve element			cm2(in2)	2（0.31）	2（0.31）

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Packing&Shipping

In order to ensure that the product is not damaged during transportation, we will choose to use high-hardness cardboard boxes or wooden boxes to package the product according to the volume of the product, and adopt protective measures such as foam anti-collision and wooden frame fixing to ensure the safe and non-destructive delivery of the goods to the greatest extent.

Company Introduction

Service providers in the industrial sector

Contacts: Marie Cheung Telephone: +8613729884993 (Wechat Synchronization) E-mail: marketing@szouhang.com Zip:518125 Address:Buildings 32,Third industrial zone, houting,Shajing,Bao'an District, Shenzhen, China (Mainland)

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