DINKONDA GLOBAL Power Plants Special A41H-16Q Series High-strength Alloy Spring H-type Stainless Steel Sealed Micro Opening Closed Safety Valve

DINKONDA GLOBAL Power Plants Special A41H-16Q Series High-strength Alloy Spring H-type Stainless Steel Sealed Micro Opening Closed Safety Valve

Product Overview
A41H-16Q is a spring micro opening closed safety valve, with a valve body made of QT400 ductile iron and a nominal pressure of PN16. Valve without wrench, closed valve cover structure; When the internal medium pressure of the pressure bearing equipment exceeds the set pressure, the valve disc opens slightly to discharge the medium for pressure relief; After the pressure drops to the reseating pressure, it automatically closes and all the medium is discharged from the outlet side without escaping outward. It is suitable for overpressure protection of pressure vessels and pipelines for media such as water and compressed air.

Structural Composition
1. The whole machine consists of a valve body, valve seat, valve disc, valve stem, spring component, closed valve cover, adjusting screw, and flange sealing pair

2. Valve body: QT400 ductile iron, high strength, good toughness, impact and seismic resistance, not easily brittle or cracked;

3. Sealing surface: H-shaped stainless steel sealing pair, wear-resistant and corrosion-resistant, stable sealing performance;

4. Spring: High strength alloy spring, anti fatigue, stable set pressure;

5. Closed valve cover: no external wrench, the discharge medium is sealed and exported, protecting the internal spring from corrosion by the on-site environment;

6. Flange connection structure, inlet and outlet flanges facilitate docking with pipelines and pressure vessels.

Core Features
1. Micro opening structure: After jumping, the valve flap has a small opening height, suitable for liquid media, and has sensitive opening and closing;

2. Closed valve cover design ensures that the medium does not leak out and no gas flows outwards, keeping the site clean;

3. QT400 ductile iron valve body, resistant to vibration and reliable pressure bearing;

4. Stainless steel sealing surface, resistant to medium erosion, rust resistance, and long sealing life;

5. The upper adjustment screw can fine tune the set pressure within the calibration range;

6. Stable opening and closing pressure difference, good reseating performance, and low leakage after closing;

7. Compliant with special equipment safety valve specifications, used for safety protection of pressure vessels and pressure pipelines.

Technical Specifications
Model: A41H-16Q
Nominal pressure: PN16
Valve body material: QT400 ductile iron
Sealing surface: stainless steel (H)
Applicable media: water, compressed air, etc
Medium temperature: ≤ 200 ℃
Connection method: flange connection
Set pressure range: 0.1~1.6MPa
Structural form: Spring micro opening type, closed type (without wrench)

Application
Hot water boiler, boiler feedwater system;
Heat exchange station, heat exchanger, stabilizing tank, pressure vessel;
Circulating water, water supply pipelines, air compressor storage tanks;
Overpressure protection for water and compressed air pressure equipment in HVAC, light industry, etc.

Installation And Usage Precautions
1. The safety valve must be installed vertically upwards, and it is strictly prohibited to tilt or invert it;

2. The inlet pipeline is short and straight, and no shut-off valve is allowed to be installed on the inlet side; The export pipeline leads to a safe area;

3. Regularly calibrate the set pressure according to relevant specifications for special equipment, and only after passing the calibration can it be put into use;

4. Regular inspections should be conducted to prevent impurities from entering the valve chamber and scratching the sealing surface. In case of internal leakage, timely maintenance should be carried out;

5. Unauthorized rotation of the adjusting screw and arbitrary alteration of the set pressure are strictly prohibited;

6. This model does not have a manual wrench and cannot be pulled online for testing. It relies on regular calibration to verify the reliability of the action.