Hammer lever safety valve profile

Hammer lever safety valve is the use of weights and levers to balance the role of the valve flap force. According to the principle of leverage, it can use the weight of the smaller hammer by increasing the lever to obtain greater force, and by moving the weight of the position (or change the mass of the hammer) to adjust the relief valve opening pressure. Hammer lever safety valve structure is simple, easy to adjust and more accurate, the added load will not increase due to the valve has a greater increase, suitable for high temperature applications, used to be more common in the past, especially Is used in boilers and high temperature pressure vessels. However, heavy hammer leveraged safety valve structure is relatively bulky, loading mechanism is easy to vibration, and often due to vibration and leakage; its back seat pressure is low, not easy to close after opening and maintain tight.

Overhead Sectional Door

Overhead sectional door most widely used for loading areas on all types of industrial premises and Designed with a curved overhead track, these vertically-opening sectional doors can be installed in areas with reduced head room. They provide heat and sound insulation with its composite panel construction.

The counterbalance and cable system provides quiet and straight forward operation for manual doors. Electric operation is available for larger applications that can incorporate many alternative operator options to suit all client requirements.

The standard outer panels are manufactured from 0.5mm thick, high quality zinc coating to BS EN 10147

For the best weather protection the sectional door panel has an interlocking hinged joint integrating a high quality seal the full length of the panel.

A counterbalance system is incorporated into the sectional overhead door to ensure efficient and effortless operation.

The counterbalance comprises of springs mounted on a steel shaft that are high tensile helical wound steel. It has been heat treated for enhanced performance for around 50,000 cycles.

Reducing shaft friction is achieved with the aid of brackets and guide rollers incorporating highest quality sealed bearings.

Overhead Sectional Door,Overhead Sectional Garage Door,Automatic Overhead Sectional Door, Overhead Insulated Garage Door

Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfrollershutterdoor.com