Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of 2frm10/16 series manual flow control valve in China, also supports customized service. If you're going to wholesale high quality 2frm10/16 series manual flow control valve made in China, welcome to get pricelist from our factory.
Products Description
The 2FRM10/16 series manual flow control valve is a mechanical device used to limit and adjust the flow of hydraulic oil in a circuit. It has no electrical components or pilot lines. Flow is regulated by turning a rotary knob on the top of the valve body. A key-lock mechanism sits on top of the knob. When the key is turned and removed, the knob is locked in place, and the flow setting cannot be changed. The valve is available in two mounting sizes. The NG10 size is rated for 50 L/min. The NG16 size is rated for 160 L/min. Both sizes operate at a maximum inlet pressure of 31.5 MPa (315 bar). The valve regulates flow in both directions. If installed in the pressure line, it restricts flow when the cylinder extends and when it retracts. The design number for this series is 21, which identifies the current production configuration and is used for ordering and technical reference.
Technical Specifications
Performance Parameters Table
| Parameter | Specification |
|---|---|
| Valve Size | NG10 / NG16 |
| Max. Operating Pressure | 31.5 MPa (315 bar) |
| Max. Flow | 50 L/min (NG10) / 160 L/min (NG16) |
| Design Number | 21 |
How We Collaborate on Your Order
Information we need to get it right
When you send us an inquiry, we need a few details to ensure we quote the correct valve. The valve size is the first decision. The Design Number identifies the current production version. If you have a circuit diagram or a photo of an existing valve, that helps us confirm the port orientation and the mounting dimensions. The more specific you are at this stage, the fewer questions we will need to ask later.
Quotation and lead time
Once we have the details, our engineering team reviews the configuration and confirms compatibility. We then provide a formal quotation with unit pricing and a confirmed lead time. For standard configurations, we typically ship within 2 to 3 weeks. For custom orders-such as a specific flow range or a non-standard mounting configuration-we coordinate the timeline with you during the quotation stage.
Production and testing
Your order goes into our CNC machining and assembly lines. We run each valve through a hydraulic test bench before packaging. The valve is pressurized to 31.5 MPa to confirm seal integrity. The flow adjustment range is checked to ensure the metering spool moves freely and the key-lock mechanism engages correctly.
Shipping and support
Once the valves pass testing, we seal the ports with protective caps, wrap the valve, and label it with the model number. We ship via sea freight, air freight, or international courier based on your preference. Every shipment includes an installation manual. If your project requires hydraulic schematics or 2D CAD drawings, we can provide those upon request.
A note on custom configurations
We treat custom orders as a normal part of our workflow, not as an exception. If your machine requires a non-standard flow setting or mounting pattern, send us a drawing or a detailed sketch. Our engineering team will review it and confirm feasibility before we begin production.
Quality Control
What we check before the valve is packed
The 2FRM10/16 series manual flow control valve goes through a quality control process that focuses on the specific risks of a manually adjusted flow control valve. The metering spool and the bore it moves in have a very tight clearance. If that clearance is off, the valve will not meter accurately, and the cylinder speed will be inconsistent. We measure the metering spools and bores individually during the machining stage. Spools that are not within tolerance are set aside before they reach the assembly line.
The metering spring is a critical component
The flow setting depends on the spring that provides resistance to the metering spool. If the spring force is incorrect, the valve will not maintain a consistent flow setting across the operating range. We test each spring before it is installed. Springs that do not meet the force specification are rejected.
Pressure testing at 31.5 MPa
Every assembled valve is pressurized to 31.5 MPa on a hydraulic test bench. This test confirms that the valve body and the O-ring seals can hold the rated pressure without external leakage. We do not batch test. We run this test on every single valve.
Flow and adjustment verification
We test the flow adjustment range on every valve to confirm that the metering mechanism opens and closes correctly. The adjustment knob is checked for smooth rotation. The key-lock mechanism is cycled multiple times to confirm that it engages and disengages without sticking. The goal of this test is not just to check whether the valve works-it is to confirm that it will still work after months of regular use.
Final visual inspection
Before packaging, each valve is inspected for surface finish, correct labeling, and port protection. Only valves that pass all tests are released for shipment.
Production to Delivery
Casting and body preparation
The valve bodies start as iron castings. Each casting is inspected for cracks, porosity, and surface defects before it enters the machining line. Castings that do not pass the visual inspection are rejected at this stage.
CNC machining
The approved bodies are transferred to CNC machining centers. The port faces, mounting surfaces, and metering bores are machined to the specified tolerances. After machining, the parts are cleaned to remove coolant and metal chips.
Metering spool and spring production
The metering spools are machined from steel bar stock to a precise surface finish. The springs are selected to provide the correct resistance and return force. Each spool is matched to its corresponding bore during the sizing stage.
Casting and body preparation
The valve bodies start as iron castings. Each casting is inspected for cracks, porosity, and surface defects before it enters the machining line. Castings that do not pass the visual inspection are rejected at this stage.
CNC machining
The approved bodies are transferred to CNC machining centers. The port faces, mounting surfaces, and metering bores are machined to the specified tolerances. After machining, the parts are cleaned to remove coolant and metal chips.
Metering spool and spring production
The metering spools are machined from steel bar stock to a precise surface finish. The springs are selected to provide the correct resistance and return force. Each spool is matched to its corresponding bore during the sizing stage.
Assembly
The valve bodies, spools, springs, and adjustment knobs are assembled. The key-lock mechanism is fitted to the knob assembly. O-rings are seated at the mounting interface.
certificate
FAQ
Q: What is the 2FRM10/16 series valve used for?
A: The 2FRM10/16 series is a manually adjustable flow control valve. It is used to restrict and regulate the flow rate in a hydraulic circuit, which controls the speed of a cylinder or motor.
Q: What are the available sizes and flow ratings?
A: The 2FRM10/16 series is available in two sizes: NG10 (50 L/min) and NG16 (160 L/min). The maximum operating pressure is 31.5 MPa (315 bar) for both sizes.
Q: What is the purpose of the key-lock mechanism?
A: The key-lock mechanism prevents the knob from being turned accidentally. Once the flow is set and the key is turned to lock the knob, the setting cannot be changed by vibration or by unauthorized personnel. This ensures the flow setting remains consistent.
Q: Can I adjust the flow while the machine is running?
A: Yes. The flow can be adjusted while the machine is running. The adjustment knob rotates smoothly under pressure, so you can fine-tune the speed while the cylinder or motor is moving.
Q: What should I do if the adjustment knob becomes difficult to turn?
A: A knob that is difficult to turn may indicate that the internal metering spool is binding due to contamination or lack of lubrication. The first step is to check the oil cleanliness. If the oil is clean and the knob is still stiff, we recommend inspecting the valve to confirm that the key-lock mechanism is fully disengaged before turning the knob.
Hot Tags: 2frm10/16 series manual flow control valve, China 2frm10/16 series manual flow control valve, manufacturers, suppliers, factory, dc valve in hydraulic, direction flow control valve, hydraulic directional, hydraulic monoblock solenoid directional control valve, hydraulic pilot operated directional control valve, tandem center directional control valve
