Direct Type Radiator Valve

Direct Type Radiator Valve N10142005B is designed for house heating radiators and regulating the temperature of the radiator. The direct type radiator valve is frequently used,  convenient to operate, favorable in price. We also offers 8mm radiator valves, 15mm radiator valve, antique brass radiator valves, brushed brass radiator valves, 22mm radiator valve, 10mm thermostatic radiator valve.

Direct type radiator valve is divided into manual direct type radiator valve and automatic direct type radiator valve: The automatic straight heating valve is composed of a self-operated actuator of a temperature sensor and a special matching straight heating valve body. The structure of the direct type radiator valve body often has two most common two-way valves: straight-through and angle-way valves. There are usually two types of direct heating valves, manual and automatic. 

The price of automatic straight heating valves is about three times that of manual straight heating valves, and the valve action principle is very different. Manual straight heating valves usually use a screw lift valve core, and the rotation of the handle changes from a screw to a linear displacement of the valve core. 

In order to adapt to the unique linear movement mode of the self-acting actuator of the temperature control sensor, the movement of the valve core is usually directly designed as a linear displacement that can automatically reset, so the two valve bodies are generally not interchangeable. However, there are also interchangeable specially designed valve bodies, that is, the valve body of the automatic straight heating valve, and a suitable manual screw lifting mechanism is added, which can realize the general exchange of manual and automatic. This kind of product is rare even in imported products. Italian Jiecomini has taken the lead in the market in this regard, providing a kind of double heater between manual and automatic straight heaters. Adjusting the direct heating valve, eight gear settings, the indoor temperature can be set according to you, it is extremely convenient, and it is worthy of being the world's largest supplier of HVAC valves. 

NAFCO can be upgraded to an automatic direct type radiator valve called a double-adjusted direct type radiator valve. The biggest difference from other brands is that its adjustment handle is not a temporary one-off. It is a specially designed final product with durable applications. The thread shape of the screw lift is a special stress-resistant and wear-resistant trapezoid with a pitch of 4.5mm. There is no worries for long-term use. The thread borrowed by the general temporary adjustment handle is a fine-tooth fixed thread, the thread shape is an ordinary triangle, and its pitch is only 1.5mm, and it takes three times as long to open the valve from the smallest to the largest.

With the reform of the heating system, household heat measurement and room temperature control have begun to enter the implementation stage, and it is very common to install direct type radiator valves on radiators. It is a good thing for the country and the people to save energy to the greatest extent and to meet the needs of different users for indoor temperature regulation to the greatest extent. The choice of products not only cannot meet the needs, but also may bring unnecessary economic losses to users. Now put forward some suggestions to give some useful help to peers and users.

The automatic straight heating valve is usually divided into two parts: the valve body and the valve head. The valve body is generally produced by copper casting or hot forging, and the temperature sensor medium of the valve head is mostly paraffin.

Straight heating valve: The advantage of copper casting is that it can cast products with complex cavities, less mold costs, and lower production costs, but the disadvantage is that there are many casting defects and poor compressive strength of materials; on the contrary, copper forging valve body The mold value is high, the forging equipment is complex, and the production cost is high, but high-strength products can be obtained, and the pressure resistance is much higher than that of castings, while casting defects are effectively avoided. Therefore, for valve bodies with less complex shapes, professional manufacturers use hot forging to produce valve bodies. However, there are also some manufacturers who use casting, which requires careful identification by users. The inlet and outlet of the valve body of the straight-through valve are on the same axis, and the displacement space of the valve core. Generally only 2-3mm. NAFCO automatic straight heating valve body has a very unique straight-through valve body design. Under the condition that the outlet and inlet are on the same axis, the inner cavity channel adopts a dislocation design, which effectively increases the displacement space of the valve core. Makes the spool displacement up to 4-5mm. The increase in the displacement of the valve core is very beneficial to the dirty water quality of HVAC, and if the displacement of the valve core is too small, it will be prone to blockage in the case of dirty HVAC water and serious scaling.

direct type radiator valve head: The temperature sensor in the direct type radiator valve head is generally filled with liquid and solid media. 

1. the size is different. To achieve the same thermal expansion displacement of the liquid, a larger amount of liquid is required, so the volume of the temperature sensor is larger, so the volume of the valve head is larger, and the proportion of the small valve body is a bit inconsistent, so it is better to use a solid valve head. some.

2. the liquid sealing technology is more complicated, and the production cost is slightly higher than that of the solid, so the sales price tends to be higher.

3. The liquid valve head is more sensitive than the solid one, which is the only advantage of liquid compared with solid, but in the HVAC field, a typical large lag system, this advantage has little effect. Therefore, whether it is a liquid or a solid direct type radiator valve head, as long as it is a qualified product, it can fully meet the requirements for sensitive time in the EN215 standard.

1. Adjust the valve of each riser to the appropriate position;

2. Open the manual air release valve of each radiator to exhaust the air accumulated in the radiator, or open the exhaust valve of the air collecting tank installed on the top of the system to exhaust until each radiator is hot , the debugging is completed. Once the debugging is completed, the valve should be fixed and cannot be opened and closed at will.

3. When opening the valve, turn the handwheel clockwise, when closing the valve, turn the handwheel counterclockwise, and rotate it in place according to the opening and closing indicators. The position of the radiator cannot be changed arbitrarily, nor can water be released from the system at will. If the hot water is lost, the water temperature in the pipe network will drop rapidly, resulting in a decrease in the indoor temperature.

4. If the valve is found to be faulty, stop using it immediately, find out the cause and clear the fault.

Rough color is brass angled radiator valve body sandblasted and without plating.

Electroplating (nickel-plating and chrome-plating) can enhance the corrosion resistance of brass angled radiator valves, increase hardness, prevent abrasion, improve conductivity, smoothness, heat resistance.

1. Brass raw materials are bought from local suppliers in forms of brass bars.

2. Brass bars are cut into smaller pieces with different sizes according to order requirements, heated with natural gas.

3. The heated brass bars are forged by forging machines, Out-comings are semi-finished rough brass angled radiator valve bodies.

4. The rough brass angled radiator valve bodies are trimmed and cut off unnecessary parts.

5. The rough brass angled radiator valve bodies are washed with sanding machines, to clean the dirty and oils during production.

6. The rough brass bodies are machined by CNC machinery for threads and dimensions.

7. The machined brass angled radiator valve bodies are nickel- or chrome-plated.

8. The brass angled radiator valve are ready for delivery after final finished goods quality inspection.