Quality Low Gas Usage 20 Liter Gas Leakage Proof Gas Instant Hot Water System Battery Operated factory
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Quality Low Gas Usage 20 Liter Gas Leakage Proof Gas Instant Hot Water System Battery Operated factory
Quality Low Gas Usage 20 Liter Gas Leakage Proof Gas Instant Hot Water System Battery Operated factory
Quality Low Gas Usage 20 Liter Gas Leakage Proof Gas Instant Hot Water System Battery Operated factory
Quality Low Gas Usage 20 Liter Gas Leakage Proof Gas Instant Hot Water System Battery Operated factory
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Low Gas Usage 20 Liter Gas Leakage Proof Gas Instant Hot Water System Battery Operated

Product Summary

Low gas usage 20L Gas Leakage Proof Flue Hot Water Unit Battery Operated lgnition Product Specification Gas Type: Propane, Lpg, Natural Gas Max Outlet Water Temperature: 75℃ Application: Hotel, Commercial, Household Rated Capacity: 20L Smoke Extraction Method: Natural Type Maximum Tolerable Water ...

Product Custom Attributes

Instant Start Response Time::
0.3s
Continuous Water Supply Time::
24h Uninterrupted Water Supply
Fire Power Adaptive System::
Automatic Fire Adjustment With Water Temperature
Fuel Type::
Propane / Natural Gas
Warranty::
2 Years
Rated Capacity::
20L
Water Pressure Start::
0.02Mpa-0.8Mpa
Minimum Constant Temperature Difference::
±0.5℃
Max Outlet Water Temperature::
75℃
Product Size(mm)::
700*440*188mm
Packing Size(mm)::
800*490*240mm
Loading Quantity 20GP(PCS)::
290PCS
Loading Quantity 40HQ(PCS)::
710PCS
Name:
Flue Gas Water Heater
Highlight:

20l instant hot water heater

,

0.8mpa instant hot water heater

,

20l gas instant hot water system

Basic Properties

Place of Origin:
Zhongshan City, Guangdong Province, China
Brand Name:
HADUN
Certification:
CE, CSA, ISO9001.
Model Number:
SMFGP-006

Trading Properties

Minimum Order Quantity:
100PCS
Price:
US $38.5-US $46.8
Packaging Details:
Carton box/Color box
Delivery Time:
20-25days
Payment Terms:
L/C,D/A,D/P,T/T,Western Union
Supply Ability:
40,000Pcs/Month

Product Description

Low gas usage 20L Gas Leakage Proof Flue Hot Water Unit Battery Operated lgnition

Product Specification

Gas Type:
Propane, Lpg, Natural Gas
Max Outlet Water Temperature:
75℃
Application:
Hotel, Commercial, Household
Rated Capacity:
20L 
Smoke Extraction Method:
Natural Type
Maximum Tolerable Water Temperature:
80℃
Installation:
Wall-Mounted
Method Ignition:
Electronic Ignition
Warranty:
2 Years
Body Casing:
Color Pattern Coated Panel
Rated Inlet Water Temperature:
5-35℃
After-Sales Service Provided:
Free Spare Parts, Onsite Installation, Return And Replacement
Minimum Constant Temperature Difference:
±0.5℃
Display Type:
LCD
Rapid Heating Speed:
8℃/s
Power Source:
Battery, Electric, Gas, Manual
Place Of Origin:
Guangdong.China
Packaging Types:
Corrugated Box, Color Box, Gift Box
Model Number:
SMFGP-006
Brand:
OEM/ODM
Function:
Low Water Pressure Start
Single package size:
800*490*240mm
Rated Heat Load:
40kw
Stable Water Flow Rate:
2.5-6L/min
Heat Load Adjustment Range:
3-12kW
Water Pressure:
0.02~0.8Mpa
Exhaust Way:
Flue Exhaust
Design:
Stylish Compact
Heat Efficiency:
>89%
Ignition:
Automatic Elecrical Pulse Ignition
Fire Power Adaptive System:
Automatic Fire Adjustment With Water Temperature
Multi-point Water Supply Voltage Stabilization:
No Water Temperature Fluctuation

Product Overview

Features:

1. Professional OEM service available, customizable branding and appearance per client requirements.
2. Seaworthy export packaging with 5-layer carton, suitable for long-distance international shipping. 
3. Gas filter design prevents impurities from entering the combustion system, extending product lifespan.
4. Easy-to-use temperature control knob, simple operation suitable for all age groups. 
5. Equipped with combustion viewing window for visual inspection of flame status at any time.
6. Optimized exhaust temperature design balancing thermal efficiency and safe flue gas emission.

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Customizable Services

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1. Back Shell – The Sturdy Foundation of the Unit

The back shell serves as the “skeleton” of the water heater, bearing the entire unit’s weight and protecting its internal core components. We use galvanized thickened steel plates, not ordinary painted sheets. These are processed with high‑temperature spray coating, effectively preventing rust, peeling, and color fading, while also offering acid, alkali, and corrosion resistance – greatly enhancing product durability.

Notably, the back shell features an anti‑UV spray finish (e.g., silver metallic paint applied through a two‑coat, two‑bake process). This finish is scratch‑resistant, anti‑corrosive, and resistant to UV aging, ensuring the shell does not yellow or discolor even under prolonged sunlight exposure – it stays looking new for years. All steel and galvanized materials comply with national or industry standards, providing sufficient mechanical strength and rigidity to withstand normal operating temperatures and pressures.

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2. Heat Exchanger – The Core of Thermal Conversion
The heat exchanger directly determines the energy efficiency of the unit. We adopt a specially thickened heat exchanger assembly (approximately 0.2 mm thicker than standard models), which not only extends service life but also effectively improves thermal conductivity. The efficient heat‑exchange design reduces surface temperature rise, enhancing user comfort. Made of high‑quality copper, it offers fast heat transfer, excellent corrosion resistance, and higher thermal efficiency. Depending on your specific requirements, we can equip your selected models with heat exchangers made of oxygen-free copper, tin-plated copper, or stainless steel.

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3. Induction Needle – The “Guardian” of Safe Combustion
The induction needle is the critical component of the flame‑failure protection system. It constantly senses whether the flame is burning normally. In the event of an accidental flame outage, the induction needle automatically cuts off the gas supply to prevent gas leakage. The principle: the flame generates an induction current, and the controller maintains the gas valve open upon receiving this signal; once the flame is lost, the signal stops, and the valve closes instantly. This safeguard gives you complete peace of mind.

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4. Burner – The Source of Powerful Heat
The burner is the “heart” of the water heater. We use an advanced T‑shaped flame burner that optimises the combustion structure and enlarges the combustion area, promoting full mixing of gas and air for more complete combustion and higher thermal efficiency. Combined with a secondary oxygen‑supply combustion chamber, combustion is cleaner and more thorough, effectively reducing nitrogen oxide (NOx) emissions – both environmentally friendly and energy‑saving. The flame is stable, with minimal flame lift, no yellow tipping, and low combustion noise.

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5. Gas/Water Valve Assembly – The Precision “Control Centre”
The gas/water valve assembly acts as the unit’s “neural switch”, sensing water pressure and controlling gas on/off. A water‑control device detects water flow pressure and automatically opens/closes the gas valve. A built‑in pressure‑stabilising function ensures a stable gas supply, preventing risks like yellow flames, flame lift, flameout, or deflagration caused by unstable gas pressure. The precision design allows linear gas flow modulation, offering more accurate water temperature control and a superior user experience.

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6. Water Inlet Pipe – The First Step for Stable Water Supply
The inlet pipe brings cold water into the system. Made of high‑quality copper, it resists corrosion and aging. Some designs use the incoming cold water to exchange heat with the high‑temperature connecting pipe, effectively reducing the temperature rise during standby (stop‑temperature rise). Selected models include a built‑in water filter to prevent impurities from entering and damaging internal components.

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7. Battery Box – Reliable Power Supply
The battery box provides the power source for the pulse ignition system. Designed with anti‑short‑circuit protection (tested with a 0.5‑mm steel pin to ensure no bridging between opposite‑polarity components), it features sufficient partition height and safe construction. It accommodates standard D‑size batteries, holding them firmly with reliable contacts, ensuring the ignition system is always ready to operate.

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8. Cover (Exhaust Hood / Flue Collector) – The Efficient Flue Gas Guide
The cover (exhaust hood) sits above the combustion chamber, collecting and directing combustion flue gases smoothly into the exhaust pipe. It is manufactured from thickened cold‑rolled steel with a high‑temperature‑resistant anti‑corrosion coating that resists deformation and rust even under prolonged heat exposure. The internal streamlined flow‑guide design reduces exhaust resistance and prevents flue gas backflow. An integrated anti‑draft damper effectively blocks strong outdoor winds from blowing into the unit, preventing flameout or unstable combustion. Working in close coordination with the heat exchanger, the hood also recovers partial waste heat, further boosting overall thermal efficiency. 

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9. Fireproof Plate – The Ultimate Safety Barrier
The fireproof plate is a critical line of defence in the safety design. Installed inside the unit, it effectively blocks heat from transferring to the outer casing, keeping surface temperatures within safe limits. When the water heater is mounted on a combustible wall, the fireproof plate is especially vital for fire safety. This design ensures you can use the appliance with complete confidence.

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10. Water Outlet Pipe – The Channel for Consistent Hot Water
The outlet pipe delivers heated water to your tap points. Crafted from premium copper, it withstands high temperatures and corrosion. Working in tandem with an intelligent temperature‑control system, it can monitor water flow changes in real time and precisely adjust output, ensuring stable water temperature even when multiple points are used simultaneously throughout the house.

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11. Pulse Ignition Device – The Instant Start‑up Activator
The pulse ignition device consists of electronic components that form a high‑frequency oscillator, generating high‑voltage sparks to ignite the gas at the burner. We use a fully silent pulse igniter with a lifespan far exceeding 100,000 cycles – well above international standards. It offers reliable ignition, stable performance, and long service life, so you never have to worry about misfires.

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12. Knob – High temperature resistance and corrosion resistance

Various styles of knobs customized for you. Weather-Resistant Material – Looks and Performs Like New —— Made of flame-retardant ABS engineering plastic, compliant with national electrical safety standards. Enhanced with anti-UV and heat-resistant formulations to prevent brittleness, deformation, or discoloration over long-term use. Even when installed in kitchens or balconies with significant temperature and humidity fluctuations, it maintains stable mechanical performance

Production Process

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Welcome you to contact us and customize your own gas water heater. Support OEM / ODM. We support custom mold design and tailor-made production to match your preferred appearance. Before mass production, we will confirm the first sample with you, allowing you to inspect our quality. After signing the contract and finalizing the Proforma Invoice (PI),  begin batch production for you. During the manufacturing process, every gas water heater undergoes strict testing – ensuring that each unit leaving our factory delivers excellent and stable functionality.In addition, we offer ISTA 1A, ISTA 3A, and ISTA 6A international packaging to significantly reduce the risk of product damage during transit.

About us

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About Taiming – Innovation Without Borders

Founded in 2017, Zhongshan Taiming Appliance&Technology Co., Ltd. has always placed product innovation and honest operation at the core of its strategy. Starting with kitchen appliances and household gas water heaters, Taiming steadily built a strong reputation as a professional OEM manufacturer.

Global Expansion & New Categories
In 2019, Taiming pioneered a new product line – RV water heaters – in response to growing international demand. This strategic move successfully transformed the company into an export-oriented business. Through cross-border trade partners, Taiming’s RV water heaters are now widely sold in North America and Australia.

A New Chapter – Shuangmei Electric Appliance Co.,Ltd.
To further strengthen our independent overseas operations, Taiming established Shuangmei Electric Appliance Co.,Ltd. in 2025.  Independently manages Taiming’s international business, and responsible for exporting products, serve overseas customers. Ensure faster response, better service, and deeper market penetration.

Market Recognition
Thanks to outstanding product quality and a professional service team, Taiming has received more than 6,000 visits from overseas merchants. Our products are now sold in 120+ countries and regions across five continents, establishing a strong OEM manufacturer image in the global market.

Core Values & Future Vision

Since 2017years,Zhongshan Taiming Appliance / ShuangMei Electric Appliance Co.,Ltd. has been specialized in research and development of home-used water heater appliance, gas stove, boiler for more than 10years,mainly produce gas water heater(indoor,outdoor and camping series and customized items). Our factory covers more than 20,000 square meters and there are more than 100 employees. We provide one-step ODM&OEM for global market. We have depended R&D department,Produce department,EQ and Testing departments. All our products with CSA,CE,EAC,AGA,CCC,Rosh international certifications to meed the whole world customized demands. Because of focusing on the quality,so we can make the guarantee of 2 - 5 years warranty of our products.

We based on a complete quality management system,driven by institutional innovation and management innovation,relies on the Internet as a platform,and provides online and offline service models to provide high-quality products and considerate services. In the future competition,the company will continue to serve customers around the world with excellent quality,reasonable and competitive prices,on time delivery and perfect after-sales service.
Our corporate mission is: To provide first-class services and continuously innovative products,and to spread the concept of energy conservation and environmental protection. Our aim is: First-class response speed,considerate after-sales service,and win-win development. TaiMing Appliance&Technology is grateful to all our customers for their continued companionship. Thank you for your strong support. We will grow with you,create value together,and embrace the future together.

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1. Four automated production lines - The production capacity of a single production line can reach up to 10,000 units per month. During the peak season of orders in autumn and winter, the monthly output of gas water heaters can reach as high as 40,000 units. If you plan to make a purchase, we suggest that you contact us as early as possible to avoid the long delivery period during the autumn and winter seasons.

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2. Fully Automatic Shrink-Wrap Packaging – Moisture-Proof & Rust-Proof for Worry-Free Ocean Shipping

Before cartoning, every unit is processed through a fully automatic heat-shrink film wrapper. This tight, transparent layer acts as armor, effectively isolating each machine from high-salinity sea fog corrosion, warehouse dust, and minor handling scratches. No matter how long the sea voyage, every unit arrives at your warehouse looking factory-fresh, significantly reducing end-user return and exchange rates.

3. Fully Automatic Strapping – Eliminating “Collapsed Cartons” & Reducing Damage to Near Zero

We employ fully automatic cross/H‑type strapping machines to reinforce every carton with high-tension bundling. The powerful compression integrates each carton securely with the pallet, thoroughly eliminating carton deformation, bursting, and collapsing caused by rough seas and stacking pressure during transit. Our commitment: any shipping damage caused by insufficient packaging is fully covered by us.

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4. Experimental And Testing Equipment

Fan Life Test Bench, Air Pressure Switch Life Test Bench, Gas Proportional Valve Life Test Bench, Display Screen Life Test Bench. 

When customizing samples for customers and producing large quantities of products, we will conduct lifespan tests on the core components of the gas water heaters to ensure the safety and stability of these components. For components such as fans, pressure switches, gas proportion valves, and display screens, we will perform performance and safety tests for each gas water heater for customers according to strict testing standards.

② Gas Water Heater Comprehensive Performance Test Bench

Installed at the end of every production line, this test bench performs 100% full inspection on every single finished unit before shipment. It automatically conducts airtightness testing (ensuring zero gas or water leakage) and verifies all safety protection functions – including dry‑burn prevention, flame‑failure shutdown, and tip‑over protection – to confirm they respond correctly. Any unit failing any criterion is instantly rejected and never reaches the market. This final quality gate guarantees that every water heater you receive is fully functional and defect‑free.

Gas Water Heater Comprehensive Performance Sub-Test Bench
After the main test bench completes 100% full inspection, this sub-test bench performs a secondary auxiliary check on production units, focusing specifically on water pressure stability – simulating household water pressure fluctuations to verify consistent temperature performance and component sealing under varying pressures. This " re-verification gate " effectively filters out potential issues caused by sudden pressure changes, ensuring every shipped unit has a stable and reliable water circuit. Double inspection, double peace of mind.

④ Electrical Safety Comprehensive Test Bench

After passing performance and sealing inspections, every water heater must undergo 100% electrical safety testing on this bench. The system automatically checks grounding continuity to ensure a reliable connection between the metal casing and the earth wire, eliminating shock hazards; it also conducts high-voltage dielectric strength testing (hipot test) to verify that insulation between live parts and the casing meets standards. Any failure triggers an immediate alarm and lockout, preventing defective units from leaving the factory. This final “ electrical safety insurance ” gives your end users peace of mind and you total confidence in every shipment.

⑤ Precision Salt Spray Test Chamber
During the new sample development phase, we place complete water heaters into our precision salt spray chamber to simulate extreme marine environments with high salinity, high temperature, and high humidity through continuous atomized spray testing. Every metal component – including the back shell, burner, heat exchanger, and pipe fittings – must withstand over 72 hours of exposure without red rust, corrosion, or coating peeling. This “ accelerated aging test ” guarantees that your custom samples remain corrosion-resistant and perform like new, whether destined for coastal cities or island nations.

⑥ Programmable Temperature & Humidity Test Chamber
During the new sample validation phase, we place complete units into our programmable temperature and humidity chamber to simulate extreme climate combinations – including high‑temperature/high‑humidity, low‑temperature/low‑humidity, and rapid thermal cycling – to comprehensively evaluate ignition stability, combustion efficiency, electrical insulation performance, and sealing material weather resistance. Through multiple programmable temperature‑humidity cycling tests, we ensure that your custom samples maintain stable performance no matter whether destined for tropical rainforests, frigid regions, or desert areas with extreme day‑night temperature swings.
⑦ Finished Gas Water Heater Comprehensive Performance Testing Equipment

During new sample validation and batch random inspection of mass production, we use our finished product comprehensive performance testing equipment to conduct energy efficiency coefficient testing (thermal efficiency, flue gas temperature, etc.) and a full scan of all safety indicators – comparing every parameter against national standards (GB 6932) and destination-specific certification requirements (such as CE, CSA, AGA, etc.). The system automatically determines whether each unit meets every criterion, ensuring your products not only deliver excellent performance but also clear customs smoothly and enter the market in full compliance, eliminating risks of returns or penalties due to non-compliance.

⑧ Gas Water Heater Service Life Test Bench

During new sample validation and batch random inspection of mass production, we place complete units onto our service life test bench to conduct 10,000 complete start-stop durability cycles, strictly in accordance with national standards (GB 6932) – simulating daily user on/off operations to verify performance degradation and reliability of ignition, combustion, heat exchange, flame-failure protection, and all other systems after long-term repeated use. Every new sample unit must pass this test, and mass production batches are regularly spot-tested. 10,000 start-stop cycles equate to over 10 years of normal household usage – proving your products can stand the test of time.

⑨ Gas Dedicated Analyzer
Gas is the " fuel " for water heaters, and composition fluctuations directly affect combustion efficiency and safety. We are equipped with a gas dedicated analyzer to conduct precise composition testing on every incoming gas batch – including calorific value, Wobbe index, combustion potential, methane content, and other critical parameters. This ensures that the test gas used on our production line perfectly matches the gas supply in your target market, preventing issues such as incomplete combustion, yellow flame, and deflagration caused by gas incompatibility. Every test report is fully traceable, providing reliable data support for your product compliance certification.

⑩ Single-Arm Drop Tester

Packaging is the " last armor " before products go global. Our single-arm drop tester simulates accidental drops during handling, loading, and transit by subjecting fully packed water heater cartons to free-fall impact tests. Testing is strictly conducted according to the packaging standards you specify – whether it's Amazon A1~A6 certification standards or international protocols such as ISTA, ASTM, and ISO – all can be precisely accommodated. Every custom packaging solution must pass rigorous drop tests before mass production, ensuring your containers arrive at overseas warehouses with zero damage upon unboxing.

⑪ Simulated Transport Vibration Test Table

Sustained vibration during long-distance transport is the " invisible killer " that can loosen internal components and compromise product integrity. Our simulated transport vibration test table conducts fixed-frequency and sweep-frequency vibration tests on fully packed water heater cartons, replicating 3D vibration environments encountered in trucks, container ships, and aircraft cargo holds. Every custom packaging solution and internal cushioning structure must pass vibration testing before approval, ensuring that after thousands of kilometers of cross-border shipping, every unit arrives at your warehouse with all components firmly secured, electrical connections intact, and performance " as good as new ".

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FAQ:
What are the competitive advantages of your company?
Answer: We have a skilled professional team and advanced dedicated production lines.

What advantages do your products have?
Answer: We deliver high-quality products at reasonable and budget-friendly prices.

Is customization available for the logo and color?
Answer: Yes, customized samples are available.

What other services does your company provide?
Answer: Yes, we provide comprehensive after-sales support and prompt delivery.

Contact Our Experts And Get A Free Consultation!

Our mission is to offer "High Quality" & "Good Service" & "Fast Delivery" to help our clients to gain more profits.