MF Manual Angle Aluminum-Plastic Pipe Radiator Valve
MF Automatic Angle Aluminum-Plastic Pipe Radiator Valve vs MF Manual Angle Aluminum-Plastic Pipe Radiator Valve Comparison
MF manual angle aluminum-plastic pipe radiator valve relies purely on manual knob for flow adjustment; users must manually change opening when indoor temperature changes; no temperature-sensing component, low unit cost.
MF automatic angle aluminum-plastic pipe radiator valve is thermostatic radiator valve (TRV). It is fitted with built-in thermo-sensitive expansion element. It automatically senses ambient room temperature and drives valve-core opening / closing without frequent human operation. It adopts 90-degree angle-form body with compression-union connection for aluminum-plastic composite pipe, achieves automatic indoor constant-temperature control, eliminates water-hammer effect, improves heating-system energy-saving performance, procurement cost higher than manual variant.
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Item |
MF Automatic Angle Aluminum-Plastic Pipe Radiator Valve (This Product) |
MF Manual Angle Aluminum-Plastic Pipe Radiator Valve |
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Drive element |
Built-in thermo-sensitive expansion capsule (no external power) |
Manual screw-lift core, no temperature-sensor |
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Regulation logic |
Auto-adjust hot-water flow according to room temperature |
Full-manual knob adjustment by operator |
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Water-hammer suppression |
Proportional gradual stroke, reduce water-hammer risk |
On-off / manual-step adjustment, water-hammer risk exists |
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Pipe connection |
90° angle-body + compression union for aluminum-plastic composite pipe |
90° angle-body + compression union for aluminum-plastic composite pipe |
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External power supply |
Not required, thermal-energy-driven |
Not required |
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Over-temperature protection |
Built-in over-temperature protection function |
No over-temperature protection |
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Procurement cost |
Relatively high |
Economical |
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Typical usage |
Requiring unattended auto constant-temperature radiator circuits |
Projects requiring only manual on-site commissioning & hydraulic balancing |
Product Overview
Yuanlun MF automatic angle aluminum-plastic pipe radiator valve is brass-bodied thermostatic radiator valve (TRV). Equipped with thermal-sensitive expansion capsule, works without external power source. 90-degree angle-type flow-passage with dedicated compression-union joint for aluminum-plastic composite pipe.
It senses indoor ambient temperature via thermostatic element; thermal expansion force drives valve-core stroke to automatically regulate hot-water flow-rate, stabilize room temperature, and realize proportional flow-control to mitigate water-hammer shock. Built-in over-temperature protection mechanism improves system operation safety. PN16 nominal pressure-rating, working-temperature 5℃-90℃. Compact angle-shape adapts narrow-space floor-riser radiator installation. Widely-used in residential houses and commercial building heating-systems with aluminum-plastic composite pipe piping.
Important note: Installation recommended to be completed by qualified HVAC plumbing technicians. Valve thermostatic head must be installed away from direct radiator heat radiation, sunlight and hot-air blowing, otherwise temperature-measurement reading deviation will occur. Compression union nut must not be over-torqued to avoid crushing aluminum-plastic pipe wall. Observe medium-flow-direction marking on valve-body.
Key Advantages
- No External Power Required: Simple-structure and high-safety. Driven by thermal-sensitive element expansion force, operates without external power supply.
- High Temperature Control Accuracy: Reliable thermostatic capsule delivers precise automatic room-temperature regulation performance.
- Sensitive & Reliable Over-Temperature Protection: Integrated over-temperature protection device with wide working range, guarantees heating-system safe-operation.
- Proportional Control: Adopts proportional regulating stroke, effectively reduces water-hammer phenomenon and stabilizes whole-system running status.
- Wide Application Scope: Compatible with hot-water and various non-corrosive heating-media, applies to diversified temperature-control heating-scenarios.
- Compact & Lightweight: Space-saving compact layout, suitable for new-build heating-projects as well as old-system renovation retrofits.

Specifications
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Feature |
Description |
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Place of origin |
China |
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Brand name |
Yunnl |
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Product Name |
MF Automatic Angle Aluminum-Plastic Pipe radiator valve |
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Size |
DN15-DN50 |
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Actuating Element |
Wax-type thermo-sensitive expansion capsule (no external power needed) |
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Connection Mode |
Angle-type body + compression-union joint for aluminum-plastic composite pipe |
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Control Characteristic |
Proportional regulation, built-in over-temperature protection |
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Thread Standard |
ISO as default; G-type / NPT customizable |
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Nominal Pressure |
PN16 (1.6 MPa) |
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Working Temperature |
5℃ ~ 90℃ |
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Applicable Medium |
Heating hot-water, glycol-mixed anti-freeze non-corrosive heating-medium |
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Operation Mode |
Self-actuated by thermostatic capsule; compression-union for aluminum-plastic pipe connection |
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Minimum Order Quantity |
1 |
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Price |
Negotiable |
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Packing |
Yuanlun standard packing |
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Payment Terms |
L/C, D/A, D/P, T/T, Western Union,MoneyGram |
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Delivery Time |
15 Days |
Working Principle
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Main Components & Function
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Component |
Core Function |
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90-degree angle brass valve-body |
Change heating-medium flow-direction; embossed medium-flow-direction arrow; bear system pressure |
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Compression-union joint |
Mechanical clamping & sealing for aluminum-plastic composite pipe outer-wall |
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Wax-type thermo-sensitive expansion capsule |
Sense ambient room-temperature; produce expansion / contraction displacement by absorbing environmental heat, no external power |
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Regulating valve-core |
Driven by thermostatic-capsule displacement to change flow-passage opening degree |
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Stem packing / sealing-gland |
Prevent medium seepage at valve-stem position under heating-system pressure |
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Operating Principle
- This MF automatic thermostatic angle-valve relies on thermal-expansion displacement of built-in wax-filled thermo-sensitive capsule. The capsule senses actual indoor ambient temperature and converts temperature-change into mechanical stroke force to drive valve-core opening-degree.
- When indoor room-temperature rises above target set-value: Thermostatic-element expands, pushes valve-core to reduce hot-water flow, lowering radiator heat-output.
- When indoor room-temperature drops below target set-value: Thermostatic-element contracts, valve-core opens wider to increase hot-water flow, raising radiator heat-output.
- It implements proportional flow-regulation without external-power source. Built-in over-temperature-protection triggers under abnormal over-heat condition to secure pipeline-system.
- Aluminum-plastic composite pipe is reliably locked and sealed via compression-union joint.
- Operating reminder: Thermostatic head sensor must measure ambient room air-temperature. If it is directly heated by radiator surface, sunshine or hot-air duct, measuring offset will cause incorrect temperature-control performance.
Application Scenarios
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Residential Household Heating Systems
Use-case: Auto-temperature-control terminal for radiators adopting floor-rising aluminum-plastic composite pipe. Project value: Unattended automatic room-temperature stabilization, energy-saving heating operation for family apartments.
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Office & Commercial Building Heating Systems
Use-case: Branch-circuit auto-thermostatic regulation for centralized-heating radiator loops in offices, hotels. Project value: Proportional control suppresses water-hammer shock; realize independent zone-temperature management for multi-room commercial-buildings.
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HVAC Engineering Retrofit & New-Build Projects
Use-case: New installation or replacement of auto-thermostatic terminals for existing aluminum-plastic-pipe heating-networks. Project value: Directly mate aluminum-plastic composite pipe, reduce extra transition-fittings for renovation-works.
Installation Guide
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Pre-Installation Check
- Confirm valve DN-size matches outer-diameter of aluminum-plastic composite pipe; check valve-body medium-flow-direction arrow marking.
- Inspect brass angle-body, thermostatic capsule assembly, compression-union spare-parts; reject cracked, deformed components.
- Square-cut aluminum-plastic pipe-end; fully deburr pipe outer-wall.
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Installation Steps
- Slide compression-nut and compression-ferrule onto processed aluminum-plastic pipe-end. Fully insert pipe into valve-body union seating face.
- Tighten compression-union nut by diagonal-alternating sequence. Forbid excessive torque which will crush aluminum-plastic pipe outer-wall.
- Ensure medium flows following arrow-mark printed on valve-body; reverse-mount will degrade thermostatic-regulating performance.
- Install thermostatic sensor-head, guarantee sensor is exposed to indoor ambient air; keep away from radiator surface, direct sunlight and hot-air blowing.
- Complete system water-filling and pressure-testing; inspect compression-union joint and valve-stem for leakage.
- Set target room-temperature scale on thermostatic-head for commissioning.
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Important Installation Notes
- Installation recommended for qualified HVAC plumbing technicians.
- Diagonal-sequence tightening for compression-union nut; avoid over-torque damaging aluminum-plastic pipe.
- Thermostatic-head must correctly sample room ambient-air temperature; thermal interference leads to temperature-control deviation.
- Do not apply wrench force onto thermostatic plastic head housing.
Maintenance & Troubleshooting
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Phenomenon |
Probable Root-Cause |
Recommended Solution |
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Compression-union joint leakage |
Pipe-end burr; insufficient pre-load; damaged compression-ferrule |
Disassemble; re-process pipe-end; fit brand-new ferrule; retighten in diagonal-sequence |
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Valve-stem position seepage |
Ageing stem-packing sealing-ring |
Isolate system pressure; replace stem-packing spare-parts |
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Poor temperature-control performance |
Thermostatic-head receives heat interference (radiator / sun-exposure); capsule failure |
Re-position thermostatic-head to avoid heat-source; replace thermostatic capsule assembly |
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Valve-core jamming |
Scale / heating-system sludge entering valve-inner-cavity |
Flush heating-loop pipeline; disassemble & clean valve-core assembly |
Routine-Maintenance Suggestion
- Visual inspection for union-joint and stem-position leakage: Quarterly during heating-season
- Check thermostatic-head installation position, free from heat-interference: Annually before heating-season startup
- Replace aged stem-packing / defective thermostatic-capsule upon functional-failure: As-required
Purchase Considerations
When ordering MF automatic angle aluminum-plastic pipe radiator valve: confirm nominal-size matches aluminum-plastic pipe outer-diameter. Distinguish automatic TRV thermostatic valve versus manual regulating valve. This variant needs proper sensor installation space to avoid heat-interference; suitable for projects requiring unattended automatic room-temperature stabilization.
FAQ
Q: What is MF Automatic Angle Aluminum Plastic Pipe Radiator Valve?
A: It is brass angle type self actuated thermostatic radiator valve (TRV) with compression union for aluminum plastic composite pipe. Wax type thermo sensitive capsule drives automatic flow regulation without external power, with built in over temperature protection and proportional water hammer suppression, for household and commercial aluminum plastic pipe heating systems.
Q: Does this automatic thermostatic valve require external power supply?
A: No. It works purely by thermal expansion force of built in wax thermo sensitive capsule; no electricity or battery needed.
Q: Why temperature control result is inaccurate after installation?
A: Mostly caused by thermal interference: thermostatic head is heated by radiator body, direct sunlight or hot air flow. Need to relocate sensor head for measuring true indoor ambient air temperature.
Q: What pipe does this valve adapt to?
A: Designed for aluminum plastic composite pipe via compression union connection.
Q: What media and temperature can it adapt to?
A: Working temperature 5℃-90℃, PN16 pressure rating; fit for heating hot water and glycol mixed non corrosive anti freeze heating medium.
Q: Do you support sample order?
A: Yes, MOQ is 1 unit for sample quality evaluation purpose. Sample orders are for evaluation only; bulk project procurement is our primary business.
Q: What is standard lead time?
A: 15 working days after deposit confirmation.
Q: Can this auto thermostatic valve serve as complete shut off isolating valve for radiator replacement?
A: It can realize basic shut off, its core function is auto temperature regulation. For reliable full isolation during radiator maintenance, it is recommended to match independent lock shield shut off valve.
Q: Can I mount thermostatic head facing radiator surface?
A: Strictly not allowed. Direct heat radiation will mislead temperature sensor and lead to wrong control behavior. Sensor head must sense circulating indoor room air.
Products Summary
Yuanlun MF automatic angle aluminum-plastic pipe radiator valve is brass self-actuated thermostatic radiator valve (TRV). PN16 pressure-rating, DN15-DN50 size-range. 90-degree angle-form with compression-union joint for aluminum-plastic composite pipe. Wax-type thermo-sensitive capsule realizes power-free automatic proportional flow-regulation, with built-in over-temperature-protection and water-hammer-reduction performance. Compact layout fits new-build and renovation heating-projects. Widely-applied in residential apartments, office-hotel commercial centralized-heating aluminum-plastic-pipe radiator-systems. Sample-order supported for pre-project-evaluation, 15-day standard lead-time for worldwide plumbing-HVAC distributors and engineering-contractors.
Factory Information
Zhejiang Yuanlun Valve Co., Ltd. was founded in 2006, formerly known as Yuhuan Guohong Valve Co., Ltd. It is located in Yuhuan, Zhejiang Province, known as the "Valve Capital of China". After nearly two decades of stable development, Yuanlun Valve is a professional manufacturer for HVAC valves integrating R&D, production and sales. Our product portfolio covers floor heating systems, air-conditioning systems, domestic water valves, including ball valves, thermostatic valves, manifolds, check valves, stop valves, filter valves, angle valves, pipe fittings, corrugated pipes and other series.
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