Coil Iran

heli coil

A Helicoil is a metallic threaded insert for repairing and reinforcing damaged internal threads. It is made from Austenitic stainless steel wire such as AISI 302/304 or Inconel X-750 alloy with a square or diamond cross-section. The wire diameter typically ranges from 0.6 to 2 mm, graded according to ISO 9001:2015. Helicoils are available in metric M2 to M48 and unified UNC/UNF thread sizes. The ultimate tensile strength of standard steel inserts is at least 1400 MPa. Installation requires creating a starter thread using a special drill and tap steyer. After installation, the inserts back-out torque is up to 40% higher than the original threads. This feature secures the connection against vibration-induced loosening.

The Helicoil structure is a spring-like coil with a 90-degree wind angle and a short lead-in tang. Surface coatings like silver or PTFE are sometimes used to reduce friction and improve electrical properties. According to aerospace standards like NASM 33575 or MS 21209, it must withstand temperature cycles from -55°C to +260°C. Quality control tests include torsional tension, sealing tests, and salt spray corrosion resistance checks. Its primary applications are in aircraft engines, braking systems, and aluminum cylinder blocks. The inserts are permanently locke

helicoil

Rigid couplings are manufactured from forged C45 steel with heat treatment and 700 MPa tensile strength. These couplings are designed for shafts with diameters from 10 to 200 mm. Shaft bore tolerance precision follows ISO H7 standard for backlash-free connection. Gear couplings utilize helical gear teeth with a 20-degree pressure angle. This design accommodates angular misalignment up to 1.5 degrees. Torque transmission capacity ranges from 50 to 20,000 Newton meters. Disc couplings are produced from 316 stainless steel with 0.5 to 3 mm thickness. These couplings can absorb up to 95% of torsional vibrations.

Elastomeric coupling structures consist of two metal flanges and a rubber element. The rubber elements torsional hardness is adjustable between 40 to 90 Shore A. These couplings withstand operating temperatures from -30 to +120 degrees Celsius. Hydraulic couplings are filled with silicone oil of ISO VG 32 viscosity grade. They feature a shock absorption coefficient up to 250% of rated torque. Maximum rotational speed varies between 3,000 to 20,000 RPM across types. Hot-dip galvanized coating with 80-micron thickness guarantees corrosion resistance. Service life under nominal load exceeds 50,000 hours of continuous operation.

Coil springs

A torsion spring is a helical elastic component designed to generate torque and store angular energy in rotational mechanisms. Wire diameter typically ranges from 0.3 to 18 millimeters, and mean coil diameter varies between 5 and 180 millimeters. The shear modulus of spring steel is approximately 79 gigapascals, and allowable bending stress ranges from 600 to 1200 megapascals. Effective working angle is defined between 30 and 270 degrees depending on design. The torque rate is calculated using k equals Ed to the fourth power divided by 10.8nD. The spring index is commonly selected between 4 and 12 to control stress concentration.

The structure consists of a helical body with two straight or angular legs measuring 5 to 250 millimeters in length. The number of active coils typically ranges from 2 to 15 to achieve required angular stiffness. Stress relief heat treatment is performed between 250 and 420 degrees Celsius. Final hardness of carbon steel after treatment ranges from 44 to 52 HRC. Maximum allowable stress at the leg junction is limited to less than 80 percent of yield strength. Quality control includes torque angle testing, fatigue evaluation up to 10^6 cycles, and angular deviation measurement within ±1 degree.

DamaTajhiz DT.CF1200 silent concealed ceiling fan coil unit

The DamaTajhiz DT.CF1200 silent concealed ceiling fan coil unit, with an airflow capacity of 1200 CFM, is designed for large office, commercial, and public spaces. It provides both cooling and heating functions with uniform airflow and ultra-low noise performance. The three-speed dynamically balanced galvanized fan and Class B electric motor minimize vibration and extend system lifespan. The copper coil with aluminum fins ensures efficient heat transfer and high thermal performance. Its low-profile and robust design allows easy installation in false ceilings and confined areas.

The DamaTajhiz DT.CF1200 fan coil unit features IP44 protection and internal thermal and acoustic insulation for safe and silent operation. The washable air filter enables quick and easy maintenance. The unit operates below 45 dB and is ideal for spaces ranging from 50 to 70 square meters. It runs on 220V single-phase power and provides suitable static pressure for short duct systems. The galvanized steel body is corrosion- and moisture-resistant, and the unit is engineered in accordance with ASHRAE international standards for optimal performance and durability.

DamaTajhiz 400-liter horizontal coil-type hot water tank

The DamaTajhiz 400-liter horizontal coil-type hot water tank is designed to supply sanitary hot water in residential, office, and commercial buildings with medium to high demand. It consists of a steel tank with an internal copper heat exchanger coil that efficiently transfers heat from the boiler to domestic water. The body is made of ST37 steel coated with anti-corrosion epoxy, providing durability against pressure and rust. The 400-liter capacity ensures a continuous supply of hot water for multiple users. Its horizontal design allows easy installation in compact boiler rooms.

The copper heat exchanger coil in the DamaTajhiz coil-type tank provides high heat transfer efficiency and rapid thermal response. Injected polyurethane insulation around the tank minimizes heat loss and maintains water temperature for longer periods. The tank operates safely at 6 bar pressure and up to 95°C. Equipped with a thermowell, safety valve, inspection hatch, and standard connections, it offers safe operation and easy maintenance. Strong construction, high energy efficiency, and long lifespan make it a reliable solution for modern heating systems.

DamaTajhiz 300-liter horizontal coil-type hot water tank

The DamaTajhiz 300-liter horizontal coil-type hot water tank is designed to supply domestic hot water for residential, office, and commercial buildings. It consists of a steel cylinder with an internal copper coil that efficiently transfers heat from the boiler water to the domestic water. The tank body is made of ST37 steel coated with anti-corrosion epoxy, providing excellent resistance to pressure and rust. The 300-liter capacity is ideal for apartments or spaces with moderate hot water demand. Its horizontal design ensures easy installation and convenient access to connections.

The DamaTajhiz horizontal coil-type tank features a high-efficiency copper heat exchanger coil for optimal heat transfer. Injected polyurethane insulation prevents energy loss and maintains water temperature. The tank operates safely at a pressure of up to 6 bar and a maximum temperature of 95°C. Standard inlet and outlet fittings, safety valve, thermowell, and inspection hatch are key components. Precision engineering, high efficiency, and long service life make this DamaTajhiz product a reliable choice for modern heating systems.

DamaTajhiz DT.CF1000 silent concealed ceiling fan coil unit

The DamaTajhiz DT.CF1000 silent concealed ceiling fan coil unit, with an airflow capacity of 1000 CFM, is designed for medium to large residential, office, and commercial spaces. It provides both cooling and heating with uniform airflow and minimal noise. The three-speed galvanized balanced fan and Class B electric motor reduce vibration and enhance system durability. The copper coil with aluminum fins ensures efficient heat exchange and uniform temperature distribution. Its compact and slim design allows easy installation in false ceilings with limited space.

The DamaTajhiz DT.CF1000 fan coil features suitable static pressure for short duct connections and a washable air filter for convenient maintenance. The noise level remains below 42 dB, and energy consumption is optimized for efficiency. Operating on 220V single-phase power, it is ideal for areas ranging from 40 to 55 square meters. The galvanized steel casing with internal thermal and acoustic insulation enhances durability and energy performance. The unit complies with ASHRAE international standards, ensuring stable and long-lasting operation.

DamaTajhiz DT.CF600 silent concealed ceiling fan coil unit

The DamaTajhiz DT.CF600 silent concealed ceiling fan coil unit, with an airflow capacity of 600 CFM, is designed for residential, office, and medium-sized spaces. It provides both cooling and heating functions with uniform airflow and ultra-low noise operation. The three-speed galvanized balanced fan and Class B electric motor minimize vibration and extend unit lifespan. The copper coil with aluminum fins ensures high heat transfer efficiency and consistent thermal performance. Its slim and durable structure allows easy installation in false ceilings with limited space.

The DamaTajhiz DT.CF600 fan coil features IP44 protection and internal thermal and acoustic insulation for quiet and safe operation. The washable air filter allows for easy maintenance and service. The unit operates below 38 dB noise level and is suitable for areas between 25 to 35 square meters. It runs on 220V single-phase power and provides sufficient static pressure for short duct connections. The galvanized steel body is moisture-resistant and corrosion-protected, ensuring long-lasting performance and energy efficiency.

helicoil

Flexible couplings are manufactured from quenched 4140 alloy steel with a yield strength of 850 MPa. Standard outer diameters range from 35 to 250 mm, designed for 10 to 5000 Nm torque transmission. Their misalignment tolerance compensates for 0.5 mm axial, 0.25 mm radial, and 0.5 degree angular deviation. Elastomeric elements use 98 Shore A polyurethane or Hytrel, operating from -40 to +120°C. Natural frequency typically exceeds 5000 Hz to prevent resonance. Installation uses high-friction clamp-type hubs, requiring no keyway.

The coupling structure comprises two metallic hubs and a central flexible element. This design transmits torsional torque with a stiffness of 100 to 10,000 Nm/rad. Couplings can absorb sudden shock loads up to 300% of rated torque. Static and dynamic balancing meets ISO G6.3 grade for speeds up to 10,000 RPM. Hubs are often protected with anti-corrosion phosphate or epoxy coating. Maintenance-free couplings offer a service life exceeding 20,000 hours of continuous operation. Standard materials provide a continuous operating temperature range from -30 to +100°C.

DamaTajhiz DT.CF800 silent concealed ceiling fan coil unit

The DamaTajhiz DT.CF800 silent concealed ceiling fan coil unit, with an airflow capacity of 800 CFM, is designed for residential, office, and commercial applications. This model provides stable and quiet heating and cooling performance. Its three-speed galvanized balanced fan and Class B electric motor reduce vibration and extend unit lifespan. The copper coil with aluminum fins ensures high heat transfer efficiency. Its low-profile design allows easy installation in limited ceiling spaces.

The DamaTajhiz DT.CF800 fan coil features optimal static pressure for short duct connections and a washable filter for easy maintenance. The noise level is below 40 dB, providing uniform air distribution throughout the room. It operates on single-phase 220V power and is suitable for spaces between 30 to 45 square meters. The galvanized steel housing with internal thermal and acoustic insulation enhances durability and energy efficiency. The unit is engineered according to international performance standards for long-term reliability and low energy consumption.

Festo solenoid coil model MDH-3/2-24DC-PI operates at 24V DC

The Festo solenoid coil model MDH-3/2-24DC-PI operates at 24V DC with a rated power of 2.1W, designed for precise and stable performance in pneumatic systems. Identified by part number 546019, it uses a high-purity copper winding capable of continuous duty within thermal class F up to 155°C. The coil has an electrical resistance of approximately 275 ohms and a nominal current of about 85 mA. Its housing is made from heat- and impact-resistant polyamide, providing IP00 protection when unmounted and IP65 when attached to the valve.

This coil is engineered for the Festo MDH valve series with a quick-mount mechanical locking system for secure installation. It features a response time under 15 milliseconds and complies with EMC standards per EN 61000. Its low power consumption and precise actuation enhance efficiency in industrial automation, production lines, and packaging systems. The coil operates reliably within a temperature range of -10°C to +50°C and up to 90% relative humidity without condensation.

Damatajhiz ceiling concealed silent fan coil 200CFM model DT.CF200

The Damatajhiz DT.CF200 ceiling concealed fan coil, with an air flow capacity of 200 CFM, is designed for medium-sized residential and office spaces. This silent model provides quiet cooling and heating with minimal operational noise. The centrifugal fan features a low-noise, high-efficiency motor for reliable air circulation. The body is made from steel sheets coated with electrostatic paint resistant to moisture and corrosion. The coil pipes are made of copper with aluminum fins, ensuring fast and uniform heat transfer.

The DT.CF200 fan coil includes a washable filter to prevent dust and airborne particles from entering the indoor environment. The unit is installed concealed in a false ceiling and features adjustable air vents and manual dampers to control airflow. Overall dimensions are 650×400×220 mm, with an approximate weight of 18 kilograms. Compatibility with central control systems and room thermostats allows optimized performance and low energy consumption.

Damatajhiz ceiling concealed silent fan coil 300CFM model DT.CF300

The Damatajhiz DT.CF300 ceiling concealed fan coil, with an air flow capacity of 300 CFM, is designed for medium to large residential and office spaces. This silent model provides quiet cooling and heating with minimal operational noise. The centrifugal fan features a low-noise, high-efficiency motor for reliable air circulation. The body is made of steel sheets coated with electrostatic paint resistant to moisture and corrosion. The coil pipes are copper with aluminum fins, ensuring fast and uniform heat transfer.

The DT.CF300 fan coil includes a washable filter to prevent dust and airborne particles from entering the indoor environment. The unit is installed concealed in a false ceiling and features adjustable air vents and manual dampers for airflow control. Overall dimensions are 750×450×220 mm, with an approximate weight of 22 kilograms. Compatibility with central control systems and room thermostats allows optimized performance and low energy consumption.

Damatajhiz ceiling concealed silent fan coil 400CFM model DT.CF400

The Damatajhiz DT.CF400 ceiling concealed fan coil, with an air flow capacity of 400 CFM, is designed for large residential and office spaces. This silent model provides quiet, uniform cooling and heating. The centrifugal fan, equipped with a low-noise, high-efficiency motor, ensures stable and effective air circulation. The body is made of steel sheets coated with electrostatic paint, resistant to moisture and corrosion. Coil pipes are made of copper with aluminum fins to ensure fast and even heat transfer.

The DT.CF400 fan coil includes a washable filter to prevent dust and airborne particles from entering the indoor environment. The unit is installed concealed in a false ceiling and features adjustable air vents and manual dampers for airflow control. Overall dimensions are 850×500×220 mm, with an approximate weight of 25 kilograms. Compatibility with central control systems and room thermostats provides optimized performance and low energy consumption.