In-line foam proportioner

Inline foam proportioning mixer is a key device for foam fire extinguishing systems that automatically mixes foam concentrate with water at a fixed ratio without external power, utilizing the water flow pressure inside the pipeline. Its core principle relies on the Venturi effect and throttling pressure reduction to achieve automatic suction and mixing of the foam concentrate.

● Main Material：Stainless steel (resistant to seawater/chemical corrosion), brass (resistant to clean water/weak acid and alkali), cast iron
● Applicable Foam Liquid Type：Protein foam, fluoroprotein foam, aqueous film - forming foam (AFFF), alcohol - resistant foam (AR) (compatible with 3%/6% concentration)
● Connection Method：Threaded connection / Flange connection / Flange connection
● Applicable Pressure Range：0.5 - 1.2MPa (conventional type)
● Response Time：Time from receiving start signal to outputting qualified mixed liquid: 3 - 5 seconds
● OEM Service：Accepted
● Delivery Terms：FOB, CFR, CIF, EXW
● Payment Mode：T/T, L/C, PayPal, Western Union

Product category:

Fire Nozzle and Fire Monitor

Adjustable Flow Rate Nozzle

Enterprise Atlas:

Email:

linhaifeng117@gmail.com

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Product Details

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Product Formation

The in-line foam proportioner is a high-efficiency foam mixing device specifically designed for fire suppression systems. It precisely controls the mixing ratio of foam concentrate and water (3%/6%), making it compatible with various types of foam extinguishing agents. Featuring corrosion resistance, rapid response, and low pressure loss, it meets firefighting needs across diverse scenarios.

Product Advantages

✅ Precise Proportioning: Intelligent adjustment of foam concentrate ratio ensures stable firefighting performance;

✅ High Efficiency & Low Consumption: Venturi tube design reduces pressure loss, promoting energy efficiency and environmental protection;

✅ Durable & Reliable: Multiple material options adapt to different corrosive media environments;

✅ Rapid Response: Millisecond-level signal triggering minimizes firefighting preparation time.

KEY WORDS： Pipeline Foam Proportioning Mixer，Fire Protection Pipeline Foam Mixer，Compact Foam Mixer，Precision Foam Proportioner，China, manufacturers, suppliers, wholesale, factory.

Other Classifed Products：

Fire Hose Categories, Fire Sprinkler System, Fire Protection Valve , Fire Hose Reel&Cabinet , Fire Foam Equipment，Fire Nozzle and Fire Monitor , Fire Hydrant , UL/FM Fire Fighting Equipment , Brass Valve Categories , Fire Extinguisher Series .

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Product Features

Integrated Design: "Plug-and-play" piping saves space and retrofitting costs. Unlike traditional pressure/balanced proportioners with their "separate tank + additional piping" design, the in-line mixer features a compact short-pipe structure. Its main body consists of DN50-DN150 stainless steel/brass pipe sections with standard threaded/flanged connections at both ends for direct integration into existing fire protection pipelines.
Precise & Efficient Mixing: Venturi pre-mixing + dynamic metering achieves ≤±1% proportioning accuracy.
Wide Pressure Adaptability: Built-in pressure sensors monitor water pressure while automatically adjusting metering pump frequency to accommodate 0.5-1.2MPa wide pressure range, ensuring stable mixing ratios across varying pipeline conditions.
System Integration: Seamless compatibility with electric/pneumatic fire pumps and pressure maintenance pump sets. Supports dual "auto (pressure-triggered)/manual" modes, suitable for both new fire systems and rapid retrofitting of aging pipelines.
Low-maintenance & Energy-efficient: Self-cleaning + smart monitoring reduces manual intervention.
Rapid Response: Delivers qualified foam solution within 3-5 seconds, meeting "second-level fire control" requirements.

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Product Parameter

Parameter Item	Specification/Description
Product Type	Built - in type / External type (classified by installation method)
Main Material	Stainless steel (resistant to seawater/chemical corrosion), brass (resistant to clean water/weak acid and alkali), cast iron
Applicable Foam Liquid Type	Protein foam, fluoroprotein foam, aqueous film - forming foam (AFFF), alcohol - resistant foam (AR) (compatible with 3%/6% concentration)
Connection Method	Threaded connection / Flange connection / Flange connection
Applicable Pressure Range	0.5 - 1.2MPa (conventional type)
Response Time	Time from receiving start signal to outputting qualified mixed liquid: 3 - 5 seconds
Pressure Loss	Forward flow pressure loss ≤0.03MPa (low - resistance design of Venturi tube)
Foam Liquid Consumption Ratio	3%/6% (automatically adjusted according to the set ratio, error ≤±0.5%)

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FAQ

Q: Can you accept sample order?

A: Yes, we accept samples with little and reasonable charge.But need customer pay sample fees and transport fees first.

Q: What is your payment terms?
A: Payment supports T/T, L/C, etc.

Q: How can l get my order?
A: We will send you the goods by UPS,DHL,FedEx,Oversea Shipment or other forwarder, all with tracking number.

Q: Why choose us?
A： With over 15 years of experience in the fire protection industry, our company has professional technical personnel and many well-known partners in the domestic market. We offer favorable prices and guarantee quality, having passed multiple certifications!

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With more than 15 years of experience serving clients, we have developed extensive expertise and in-depth industry knowledge, enabling us to deliver reliable and effective solutions tailored to your requirements.
We provide professional technical support and customized service offerings. Our committed technical team is available to assist you with product consultation, installation guidance, and comprehensive after-sales support whenever necessary.
At Sheng Feng Fire, our professionals are dedicated to helping you select the most suitable products based on your specific needs.
Please do not hesitate to contact us for further information！