Abstract: An automatic injection device for fluid has a sleeve, an actuating unit, a barrel with a piercing needle and a high-pressure air source. The high-pressure air source is mounted slidably in the barrel. The actuating unit is mounted in the sleeve and barrel and selectively blocks the high-pressure air source. When the user needs to release the high-pressure air in the high-pressure air source, the user press the actuating unit to allow the high-pressure air source to slide until the high-pressure air source hits the piercing needle. Therefore, the high-pressure air in the high-pressure air source is easily released by actuate the actuating unit without additional hand tools.

Abstract: A pressure regulator has a valve tube assembly, a gas-input assembly, a first regulating assembly and a second regulating assembly. The gas storage device has a storage unit and the pressure regulator. By the first and the second regulating assemblies, the effect of adjusting down the gas pressure is achieved to maintain the safety of use. The pressure regulator is partially embedded in the gas storage unit to reduce the overall volume of the gas storage device. However, the high-pressure piston chamber of the valve tube assembly communicates with the outside of the gas storage unit through the high-pressure gas channel to maintain the normal operation of the elastic element in the high-pressure piston chamber.

Abstract: An automatic injection device for fluid has a sleeve, an actuating unit, a barrel with a piercing needle and a high-pressure air source. The high-pressure air source is mounted slidably in the barrel. The actuating unit is mounted in the sleeve and barrel and selectively blocks the high-pressure air source. When the user needs to release the high-pressure air in the high-pressure air source, the user press the actuating unit to allow the high-pressure air source to slide until the high-pressure air source hits the piercing needle. Therefore, the high-pressure air in the high-pressure air source is easily released by actuate the actuating unit without additional hand tools.

Abstract: An automatic injection device for fluid has a sleeve, an actuating unit, a barrel with a piercing needle, a high-pressure air source and a driven unit. The actuating unit is mounted in the sleeve. The high-pressure air source and the driven unit are mounted slidably in the barrel. The barrel, the high-pressure air source and the driven unit are first mounted in the sleeve to be ready for use. When the user needs to release the high-pressure air in the high-pressure air source, the user press the actuating unit to drive the driven unit to slide. Then the driven unit also drives the high-pressure air source to slide until the high-pressure air source hits the piercing needle. Therefore, the high-pressure air in the high-pressure air source is easily released by actuate the actuating unit without additional hand tools.

Abstract: A compressed gas supplier has a power-free decompression device and an expansion chamber. The power-free decompression device decompresses a gas in a high-pressure source into a decompressed gas. The expansion chamber connects to the power-free decompression device and receives and stores the decompressed gas. The pneumatic tool is driven by the decompressed gas in the expansion chamber. Thus, the compressed gas supplier for the pneumatic tool is small and easy to be carry. In addition, the decompressed gas stored in the expansion chamber is also benefit for supplying decompressed gas to the pneumatic tool that needs much gas to drive.

Abstract: A compressed gas supplier has a power-free decompression device and an expansion chamber. The power-free decompression device decompresses a gas in a high-pressure source into a decompressed gas. The expansion chamber connects to the power-free decompression device and receives and stores the decompressed gas. The pneumatic tool is driven by the decompressed gas in the expansion chamber. Thus, the compressed gas supplier for the pneumatic tool is small and easy to be carry. In addition, the decompressed gas stored in the expansion chamber is also benefit for supplying decompressed gas to the pneumatic tool that needs much gas to drive.

Abstract: An automatic injection device for fluid has a sleeve, an actuating unit, a barrel with a piercing needle, a high-pressure air source and a driven unit. The actuating unit is mounted in the sleeve. The high-pressure air source and the driven unit are mounted slidably in the barrel. The barrel, the high-pressure air source and the driven unit are first mounted in the sleeve to be ready for use. When the user needs to release the high-pressure air in the high-pressure air source, the user press the actuating unit to drive the driven unit to slide. Then the driven unit also drives the high-pressure air source to slide until the high-pressure air source hits the piercing needle. Therefore, the high-pressure air in the high-pressure air source is easily released by actuate the actuating unit without additional hand tools.

Abstract: An adjustable pressure valve has a valve body, an inactive cap and an active cap. The inactive cap is mounted in the outlet of the valve body, abuts against the piston in the valve body and has an inclined edge. The active cap is mounted rotatably against the inactive cap and has an inclined edge abutting against the inclined edge of the inactive cap. When the active cap is rotated relative to the inactive cap, the inactive cap is pushed by the inclined edge of the active cap to slide inwardly or outwardly. Then the elastic element in the valve body is compressed more or less by the slide of the active cap to adjust the preset outlet pressure without disassembling the adjustable pressure valve.

Abstract: A pressure regulator has a main body, a piston, an elastic element and an adjusting element. The main body has an inlet and an outlet. The piston is mounted movably between the inlet and the outlet. The elastic element is mounted in the main body to prepossess that the piston to move toward the outlet of the main body. The adjusting element is mounted adjustably in the main body and selectively abuts against the piston to selectively close a flow path from the inlet to the outlet. Adjusting the position of the adjusting element results influences the compressed length of the elastic element. Therefore, the preset outlet pressure is fine-tuned.

Abstract: An universal air pressure valve module has a hollow shell, a sealing element, a piston and an elastic element. The sealing element is mounted slidably in a low pressure chamber of the shell. The piston is mounted slidably in the low chamber and abuts against the sealing element. The elastic element is mounted longitudinally in the low pressure chamber and presses against the piston. With the pre-assembling the sealing element, the piston and the elastic element in the shell, the universal air pressure valve module is modularized and is easy to be assembled in a desired device.

Abstract: A pressure releasing assembly has a hollow shell with a gap formed through an end and a main notch formed therein and communicating with the gap. A slide is mounted slidably in the shell and an airproof element mounted between the inner wall of the shell and the slide to keep the air from leaking through the space between the slide and the inner wall of the shell. When the slide is moved rapidly because of the excessively high air pressure, the airproof element is moved along with the slide and then is received in the main notch. Then a space is resulted between the wall of the main notch and the airproof element to allow the gas to leak out from the gap. Therefore, the air pressure is reduced rapidly to keep the component from being damaged.

Abstract: An adjustable pressure valve has a valve body, an inactive cap and an active cap. The inactive cap is mounted in the outlet of the valve body, abuts against the piston in the valve body and has an inclined edge. The active cap is mounted rotatably against the inactive cap and has an inclined edge abutting against the inclined edge of the inactive cap. When the active cap is rotated relative to the inactive cap, the inactive cap is pushed by the inclined edge of the active cap to slide inwardly or outwardly. Then the elastic element in the valve body is compressed more or less by the slide of the active cap to adjust the preset outlet pressure without disassembling the adjustable pressure valve.

Abstract: A pressure regulator has a main body, a piston, an elastic element and an adjusting element. The main body has an inlet and an outlet. The piston is mounted movably between the inlet and the outlet. The elastic element is mounted in the main body to prepossess that the piston to move toward the outlet of the main body. The adjusting element is mounted adjustably in the main body and selectively abuts against the piston to selectively close a flow path from the inlet to the outlet. Adjusting the position of the adjusting element results influences the compressed length of the elastic element. Therefore, the preset outlet pressure is fine-tuned.