Tiếng Việt
ភាសាខ្មែរA brass safety valve with a lever is a suitable choice for systems where operators need to perform regular pressure relief checks or manually release pressure when it exceeds the safe limit. In reality, many technicians encounter situations where the pressure relief valve becomes stuck and fails to open on time. Without a lever, they cannot conduct early inspections or manually release pressure when necessary.
This type of valve is especially essential in applications such as pressure tanks, boilers, air compressors, or fire protection systems using CO₂, where manually testing pressure via the lever is crucial. It not only enhances safety but also helps determine whether the valve is still functioning properly.
If you’re looking to purchase this type of safety valve, Bao Tin Steel invites you to check out the Hisec A3-L brass safety valve with lever—one of the most popular products on the market today.
Features of the Hisec A3L safety valve with pull lever
- The valve body is made from cast brass with a greyish-bronze colour and a lightly textured surface.
- A steel pull-lever is mounted on the top of the valve, allowing for manual pressure release during inspections or emergencies.
- An aluminum label affixed to the body clearly displays information such as model, brand, size, pressure rating, etc.
- The HISEC brand name is embossed directly on the valve body.
- External threaded connection at the valve base makes installation into pipelines or pressure vessels quick and convenient.
- The discharge outlet is positioned horizontally, allowing for direct pressure release or connection to an exhaust pipe.
Technical Specifications of the Hisec A3-L Brass Safety Valve with Lever:
- Size range: DN15 – DN50
- Material: Brass
- Type: With pull lever
- Connection type: Threaded
- Maximum working pressure: 10 kgf/cm²
- Set pressure range: 0.3 kgf/cm² – 10 kgf/cm²
- Origin: Taiwan
- Brand: Hisec
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Reference Price List for Hisec A3L Brass Safety Valve with Lever
Below is the reference price list for the Hisec safety valve with pull lever.
📌 Note:
- Prices do not include VAT.
- Prices may vary depending on the time of purchase, order quantity, or pressure adjustment requirements.
- All products are genuine HISEC brand, with complete CO (Certificate of Origin) and CQ (Certificate of Quality).
| Product Code | Size | Working Pressure | Connection Type | Reference Price (VND / unit) |
|---|---|---|---|---|
| A3L-HISEC-15 | DN15 (1/2″) | 10 bar | External thread | 130,000 – 160,000 |
| A3L-HISEC-20 | DN20 (3/4″) | 10 bar | External thread | 180,000 – 210,000 |
| A3L-HISEC-25 | DN25 (1″) | 10 bar | External thread | 230,000 – 270,000 |
| A3L-HISEC-32 | DN32 (1-1/4″) | 10 bar | External thread | 290,000 – 340,000 |
| A3L-HISEC-40 | DN40 (1-1/2″) | 10 bar | External thread | 360,000 – 420,000 |
| A3L-HISEC-50 | DN50 (2″) | 10 bar | External thread | 440,000 – 520,000 |
Advantages and Applications of Brass Safety Valves with Lever
Key Advantages:
- The valve is equipped with a manual pull lever for pressure release, making it easy to periodically check the valve’s operational status. Manual testing helps detect common issues early, such as valve sticking, loss of spring tension, or failure to open at the set pressure. This enables timely maintenance or replacement, reducing risks during operation.
- The valve allows manual pressure release in emergencies, such as power outages, pressure leaks, or when rapid pressure relief is necessary.
- Made from brass, the valve offers excellent corrosion resistance when used with water, steam, compressed air, or in humid environments. It operates reliably, requires minimal repairs, has a long service life, and is easy to maintain—optimising overall operating costs.
Applications
- Installed at the outlet of air tanks, air compressors, where pressure fluctuates continuously.
- Used in hot water systems such as boilers, solar water heaters, and heat circulation systems.
- Applied to protect high-pressure gas cylinders like CO₂ and N₂ in automatic fire protection (firefighting) systems.
Conclusion
The brass safety valve with lever plays a crucial role in protecting equipment, maintaining stable pressure, and ensuring operational safety. With its flexible design that allows both automatic and manual pressure release, this product is especially suitable for systems requiring regular inspections or environments with high overpressure risks.
If you are looking for an efficient, durable, easy-to-use pressure relief valve that is always in stock, Bao Tin Steel is a reliable choice. We specialise in supplying genuine industrial steel pipes, fittings, and valves with fast response, competitive pricing, and nationwide delivery support.
👉 Contact Bao Tin Steel now at 0932 059 176 to get a quotation for genuine Hisec brass safety valves with lever—complete with CO and CQ certificates, delivered nationwide!