Good quality Iso7241 A Carbon Steel Coupling - Monoblock Valves-GDV70 series – Guorui
Good quality Iso7241 A Carbon Steel Coupling - Monoblock Valves-GDV70 series – Guorui Detail:
| Rated flow rate： | 70L/min |
| Maximum flow rate： | 80L/min |
| Maximum pressure at P port： | 310bar |
| Maximum pressure at A/B port： | 310bar |
| Maximum pressure at T port： | 25bar |
| Internal leakage (at 70 bar):A/B toT ： | 30-35CC/min |
| Temperature range of the hydraulic oil： | |
| With NBR (BUNA-N) seals | -20℃-80℃ |
| With FPM (VITON) seals | -20℃-100℃ |
| Spool stroke (1/2 position)： | +7/-7 mm |
| With floating function (1/2 and F position)： | +7/-7 -9 mm |
| Recommend hydraulic oil viscosity range： | 15-75mm²/s |
| Recommend temperature range： | -40℃-60℃ |
Operating Principle
GDV70 series mono-block valve is an open centered, 3 position 4 way valve. When spool is in its neutral position, the flow from pump passes through the neutral passage to tank, with very low pressure drop. When one of the spool is moved to “1” or “2” position, the neutral passage is blocked. The flow from pump can only pass through load check to parallel passage, then, through the spool opening to work port “A” or “B”.
As shown in above picture, when first spool is in neutral, flow from pump passes through load check valve and center the parallel passage to supply flow to both spool. Due to second spool is moved to “2” position, the flow from parallel passage flows to “A2” through the spool opening. The flow from “B2” flows to return passage through the spool’s another opening. Neutral passage is blocked by the second spool.
Product detail pictures:
Related Product Guide:
Tech Deep Dive: Airflow Research Bullitt Cylinder Heads For BBF | Monoblock Control Valve On Tractor
Design Essentials: Go Big with Large Automation Design | Yuken Hydraulic Valve
Our products are broadly identified and trustworthy by people and may meet continually modifying financial and social requires of Good quality Iso7241 A Carbon Steel Coupling - Monoblock Valves-GDV70 series – Guorui, The product will supply to all over the world, such as: Mauritania, Finland, Honduras, With many years good service and development, we have a qualified international trade sales team. Our goods have exported to North America, Europe, Japan, Korea, Australia, New Zealand, Russia and other countries. Looking forward to build up a good and long term cooperation with you in coming future!
By Ray from Israel - 2016.06.16 18:23
This is a reputable company, they have a high level of business management, good quality product and service, every cooperation is assured and delighted!
By Nicole from Ukraine - 2016.01.11 17:15
