Propane gas cylindrical reducer Promtechkomplet BPO-5-2.
Reducers are produced in the climate version UHL2 for atmosphere type II and group of operating conditions – 3 according to GOST 15150-69, but for operation in the temperature range -25 to +50 ° C.
Advantages of cylindrical gearboxes Promtechkomplekt
Metal cover
Universal nipple for connecting sleeves Ø 6.3/ 9.0 mm
Service
Individual box guarantees safety of gear gauges during transport and storage in the warehouse
Russian accession standards
| Parameter | Value |
| Article | 2117602 |
| Brand | Promtech |
| Type | Balloon, single stage |
| Features | Small |
| Working environment, gas | Propane |
| Maximum throughput (m3/h) | 5 |
| Maximum inlet gas pressure, MPa (bar) | 2,5 (25) |
| Maximum gas working pressure, MPa (bar) | 0,3 (3) |
| Use | For reducing pressure and maintain flow |
| Input connection | W21.8×1/14″ LH DIN1 |
| Output connection | М16х1.5 LH + nipple Ø 6.3/Ф9.0 mm |
| Display Device Diameter, mm | 50 |
| Body Material | Алюминий Aluminum |
| Dimensions,mm | 125х85х71 |
| Weight, kg | 0,35 |
| Volume in individual packaging, m3 | 0,001 |
| Base unit | Pcs |
| Number of basic units in the package | 20 |
| Guarantee | 1 year |
| Brand Family | Russia |
| Country of production | China |
Application:
1. Laboratory analytical instruments: provide stable carrier gas or fuel gas for gas chromatographs (GC), mass spectrometers, etc.
2. Precision welding and cutting: such as TIG welding and plasma cutting, require precise control of shielding gas or plasma gas pressure.
3. Special gas system: used in the fields of semiconductors, photovoltaics, or scientific research to control the delivery pressure of high-purity or special gases.
4. Pneumatic control system: supplying gas to precision pneumatic components that require low-pressure and stable gas sources.
FAQ：
Q1. Which gas cylinder interfaces is this pressure reducing valve compatible with?
This product is designed specifically for propane/butane (liquefied petroleum gas LPG) steel cylinders, with a standard liquefied gas cylinder threaded interface on the left (such as the common W21.8). Please confirm that your gas cylinder interface standard matches this before purchasing.
Q2. What is its precise pressure adjustment range? Is this suitable for my device?
According to the pressure dial, its high-precision output adjustment range is 0.01 to 0.10 MPa. This range is very precise and designed for equipment that requires extremely stable, low-pressure gas supply, such as certain precision industrial burners, laboratory equipment, or low-power gas appliances. If you need a higher pressure (such as the common 0.8MPa), please note that this model is not applicable.
Q3. Can the material adapt to the dry and dusty climate in Central Asia?
Yes. The valve body is made of corrosion-resistant brass, and the key joints are made of stainless steel. This combination can effectively resist oxidation and wind erosion in dry climates, ensuring long-term durability.
Q4. How to install? Do you need additional accessories?
Easy installation: The left threaded port can be directly screwed into the gas cylinder valve, ensuring that the sealing gasket is intact and tightened. The right side is the hose connector, which needs to be securely fixed with clamps to the gas hose. It is recommended to apply soapy water after the first installation to check if there is any air leakage at the interface.
Q5. How often does it need to be maintained in a windy and sandy environment?
It is recommended to conduct an inspection every 3-6 months in environments with high levels of sand and dust, including cleaning the dust on the threads of the red knob, checking the sealing of each interface, and observing whether the pressure gauge pointer is sensitive and smooth during zeroing and adjustment.
Q6.What is its maximum flow rate (in kilograms per hour)? Is it suitable for commercial use in my restaurant/workshop?
This model is a high-precision regulating valve, and the flow parameters are not directly labeled. It is usually suitable for low to medium flow scenarios. For high gas consumption scenarios such as commercial kitchens and welding workshops, it is important to consult with suppliers about the maximum flow rate before purchasing to confirm if it can meet your peak gas demand.
Q7. Can it work normally at low temperatures in winter (such as minus 20 ℃)?
This product does not have built-in antifreeze or electric heating design. In the extremely low temperature environment of Central Asia, if the gas contains water, it may cause icing and affect performance. It is recommended to install insulation sleeves for pressure reducing valves in low-temperature environments and ensure the purity of the gas source.
Q8. Will the red knob loosen on its own after adjusting the pressure? Is the output pressure stable?
No. The red knob adopts a self-locking design. After adjusting to the desired pressure (such as 0.05MPa), the pressure will be reliably locked and not easily changed by vibration. It can maintain long-term stability of the outlet pressure, which is its core advantage.
Q9. What are the units on the pressure gauge? How to read?
The dial unit is MPa (megapascal), which is an internationally recognized pressure unit. The scale is very precise, with a minimum division of 0.01 MPa (approximately equal to 0.1 kilogram force per square centimeter). Please make sure to set up and operate according to this unit.
Q10. How long is the warranty period? What is the process for handling problems?
We usually provide a 12-month quality guarantee from the date of receipt. Please confirm the specific warranty terms of the supplier during procurement and keep the purchase voucher. If there is a leak or unstable pressure, the first step is to contact the supplier for remote guidance or replacement.
Our DERKIA company is the largest Russian pressure regulator production source factory in China,
We specialize in producing pressure reducers for the national markets of Russia, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan，etc.
We sincerely invite you to contact us. Please provide your specific application scenario (such as welding type, gas usage, pressure and flow requirements), and our engineers will recommend the most suitable model for you and arrange sample testing.
