Complaint
Achieve Accurate Control with CNC-Turned Sequence Valves: Direct Acting and External Pilot
What is a drain in hydraulic or pneumatic systems?
A drain is a device that allows fluid or gas to be removed from a hydraulic or pneumatic system. The drain is typically located at the lowest point of the system and is connected to a drain line or tubing. When the drain is opened, the fluid or gas flows out of the system and into a collection container.
Drains are commonly used in hydraulic or pneumatic systems to remove contaminants that can accumulate in the system over time. They are also used to drain the system for maintenance or repair purposes.
In some cases, an external pilot and drain may be used together in a hydraulic or pneumatic system. For example, in a hydraulic system, an external pilot may be used to control the operation of a valve, while a drain may be used to remove any contaminants that have accumulated in the system.
What are 2 way and 3 way Sequence Valves?
A sequence valve can be either a 2-way or 3-way valve. A 2-way sequence valve is a type of hydraulic valve that is used to control the sequence of operations in a hydraulic system with two branches. It is designed to allow the flow of hydraulic fluid from one branch to another in a specific order.
In a 2-way sequence valve, the inlet port is connected to the primary circuit, and the outlet port is connected to the secondary circuit. The valve is set to open at a specific pressure, which is determined by an adjustment screw or a spring. When the pressure in the primary circuit reaches the set point, the valve opens and allows the hydraulic fluid to flow into the secondary circuit. This opens the downstream valve, and the secondary circuit starts to operate.
A 3-way sequence valve is a type of hydraulic valve that is used to control the sequence of operations in a hydraulic system with three branches. It is designed to allow the flow of hydraulic fluid from one branch to another in a specific order.
In a 3-way sequence valve, the inlet port is connected to the primary circuit, and there are two outlet ports, one connected to the secondary circuit and the other to the tank. The valve is set to open at a specific pressure, which is determined by an adjustment screw or a spring.
When the pressure in the primary circuit reaches the set point, the valve opens and allows the hydraulic fluid to flow into the secondary circuit. This opens the downstream valve, and the secondary circuit starts to operate. At the same time, the valve directs the excess hydraulic fluid to the tank through the second outlet port, preventing overpressure in the system.
Once the pressure in the primary circuit drops below the set point, the valve closes, preventing the backflow of hydraulic fluid from the secondary circuit to the primary circuit. This process ensures that the secondary circuit operates only after the primary circuit has reached a specific pressure level, thereby preventing damage to the system or the equipment.
High precision CNC parts strictly according to customers' drawing, packing and quality demands
Tolerance: +/-0.005mm
100% inspection during production and final to guarantee quality
10 years experienced engineers and workers
Fast and timely delivery. Speedy & professional service
Offer with professional consultations in designing of new parts to save cost.
Quality assurance in accordance to ISO9001
| Material | Stainless Steel | SUS201,SUS303,SUS304,SUS316,SUS416,SUS420,17-4PH,SUS440C | |
| Steel | Q235,C20,C45(K1045),1214,1215 | ||
| Copper | C36000(C26800),C37700(HPb59),C38500(HPb58),C27200(CuZn37),C28000(CuZn40/H62),C3604, C51000, C52100, C54400,CuSn8 | ||
| Alumina | AL2024,AL5754(Almg3),AL5083,AL6061,AL6063,AL5052,AL7075 | ||
| Alloy Steel | SCM435,10B21 | ||
| Plastic | PA6,PA66,PP,PC,POM,FR4,ABS,Acrylic | ||
| Machining Processes | CNC 3-axis, 4-axis machining, CNC milling, CNC turning, CNC Lathe High precision 5-Axis turning-milling combined machining, CNC milling and turning, drilling, grinding, stamping, tapping, bending | ||
| Finish | Heat treatment, powder coating, electroplating, spraying, painting, polishing, deburring, wire drawing/brushed, anodizing, chrome plating, nickel plating, tin plating, silver plating, gold plating, galvanizing, blackening etc. | ||
| Dimensions | Customized | ||
| Tolerance | ±0.005mm | ||
| Drawing Format | PDF/JPEG/AI/PSD/CAD/Dwg/Step/LGS | ||
| MOQ | Negotiable | ||
| QC Policy | 100% inspection and random inspection before shipment, with QC passed label | ||
| Stardard | Materials and surface treatment comply with RoHS/Reach Directives | ||
| Testing Equipments | CMM, Projector, Pull Tester, Automatic Optical Inspector, Salt Spray Tester, Durometer, Tensile Machine, height gauge, micrometer, plug gauge, thread Gauges, digital caliper and etc. | ||
| Application | Automotives, Optical instrument, medical device, industrial machine, automobile, electric appliance, robot, computers, tele-communication, electronic device, digital communication, UAV, aerospace, bicycle, pneumatic tools, hydraulic and other industries, | ||
| Packaging | PE bags or bubble bags, boxes, cartons, pallet, standard carton or plastic tray, sponge tray, cardboard tray or as per customers' requirements | ||
| Trade Terms | EXW, FOB, CIF, As per customers' request | ||
| Payment Terms | Paypal or Western Union for sample orders; Larger amount by T/T with 30% as deposit,70% before shipment | ||
| Delivery Time | Within 15-20 working days after deposit or payment received | ||
| Shipping Ports | FOB Dongguan, FOB Shenzhen, FOB Hongkong | ||
