Bronze Male Thread Angle Safety Valve CB T3192-83

CB T3192-83 Bronze Male Thread Angle Safety Valve

The CB T3192-83 Bronze Male Thread Angle Safety Valve is a precision-engineered, compact pressure relief device specifically designed to safeguard marine steam systems. Certified to the stringent CB T3192-83 marine standard, this valve provides reliable, automatic over-pressure protection for boilers, steam heaters, heating coils, and other pressure vessels where operational integrity is critical.

Designed with a space-saving angle pattern and male threaded connections, this valve is the ideal choice for installations with limited access or confined machinery spaces. It is specifically engineered for use with steam at temperatures below 190°C, ensuring dependable performance in auxiliary steam systems found on merchant vessels, tugboats, and offshore platforms.

Precision Calibration for Critical Systems

This marine angle safety valve features an adjustable spring-loaded mechanism that allows for precise set pressure calibration. When system pressure exceeds the pre-set limit, the valve instantly lifts to relieve excess steam, protecting equipment from catastrophic over-pressure events, then reseats tightly once safe conditions are restored.

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Key Features & Benefits

• ✅ CB3192-83 Marine Standard Compliance: Manufactured and tested to strict Chinese marine standards, ensuring reliability and acceptance by classification societies.

• ✅ Compact Angle Design: The 90° angle configuration allows for direct mounting on boiler shells and confined piping, reducing the need for additional elbows and saving valuable space.

• ✅ Precision-Machined Stainless Steel Seats: The seat and disc are crafted from 2Cr13 Stainless Steel, providing excellent resistance to wire-drawing and erosion from high-velocity steam.

• ✅ Adjustable Pressure Setting: Features an adjustable compression screw and spring design, allowing for precise calibration across multiple pressure ranges (0.098 MPa to 1.176 MPa).

• ✅ Corrosion-Resistant Bronze & Stainless Trim: Combines a durable body with corrosion-critical internals made from stainless steel and manganese brass for long service life.

• ✅ Male Threaded Connections (GB821-75): Designed for straightforward installation into threaded pipe flanges or boiler sockets, simplifying both new construction and retrofits.

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Technical Specifications

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Main Parts & Materials

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Pressure & Size Selection Table

Select the appropriate valve based on your nominal diameter (DN) and required set pressure range.

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Main Dimensional Data (mm)

Note: Dimensional variations within pressure ranges are minimal but ensure correct spring selection for accurate set pressure.

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Applications

This marine thread safety valve is specifically designed for over-pressure protection in:

• Auxiliary Boilers & Exhaust Gas Boilers

• Steam Heaters & Calorifiers

• Steam Heating Coils (Tank Heating)

• Small Pressure Vessels & Steam Jackets

• Shipboard Steam Pipe Systems

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Frequently Asked Questions (FAQs)

Q1: What does the “Angle” design mean, and why is it useful?
A: An angle safety valve features inlet and outlet connections at a 90-degree angle to each other. This is particularly useful in marine applications where space is tight, such as directly on a boiler shell. It allows the valve to be mounted vertically while the outlet can be piped horizontally, simplifying piping layouts and reducing stress on the connections.

Q2: Can this valve be used for liquids or air, or only steam?
A: This valve is specifically calibrated and certified for steam service at temperatures up to 190°C. While the materials may be compatible with other media, the sizing, blowdown characteristics, and seat tightness are optimized for compressible fluids (steam/gases). For liquid or air service, a different valve type or recalibration is typically required.

Q3: How do I select the correct pressure range for my boiler?
A: You must select a valve whose range includes your boiler’s maximum allowable working pressure (MAWP) . For example, if your boiler operates at 5 bar (0.5 MPa) and requires a safety valve set at 5.5 bar, you would select the >0.25~0.6 MPa range and have it factory-set to 0.55 MPa. The valve’s spring must be matched to the specific set pressure to ensure accurate lift and reseat.

Q4: What do the test standards GB600 & CB3021 involve?
A: These standards govern the hydrostatic shell test and the seat tightness test for the valve.

• GB600 typically specifies the method for strength and tightness tests.

• CB3021 outlines the specific requirements for marine safety valve performance, including lift height (discharge capacity) and reseating pressure characteristics (blowdown). Compliance ensures the valve meets regulatory safety requirements.

Q5: What is the difference between this CB standard valve and an ISO or ASME safety valve?
A: The primary differences lie in the connection threads (GB821-75 vs. NPT or BSP) and the specific design criteria. The CB T3192-83 is specifically approved for use on Chinese-built vessels and vessels classed with CCS. While functionally similar to ISO valves, using the specified standard ensures compliance with flag state regulations and simplifies classification society approval for retrofit projects on Chinese-built ships.

Q6: What maintenance does this safety valve require?
A: Safety valves should be periodically tested by manually lifting the test lever (where fitted) to ensure the mechanism is free and not seized. They should also be subject to planned overhauls where the valve is disassembled, cleaned, lapped (seat and disc), and re-calibrated. Given the precision nature of the 2Cr13 stainless steel seat, any re-lapping should be performed by a qualified technician to maintain tightness.

Attention please: The description was copied from different cooperating manufacturers. The description may be different with the goods, please check with us when order.

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