Here both valves are closed and the refrigerant pressure can still be recorded on each respective gauge.The hand valves are opened by turning the handle counterclockwise. ...The hand valves are only opened to add or remove refrigerant from the system or to allow the vacuum pump to remove moisture and contaminants from the system.
We are professional OEM manufacturer of HVAC Control Products,
Refrigeration Parts&Tools,Brass fittings&Copper Fitting,Disperse pipe(refnet joint).
We founded in 1988 years and have 10 years ODM&OEM experiences.
Our products Brand"Hengsen"is a famous brand in China local market and also in some countries.
We have 3 main series products.
(1)HVAC Control products:
-Motorized brass Ball Valve
-Motorized Zone Valve
-Electric Thermal Valve
-Brass Solenoid Valve(air,oil,water)
-Motorized Flange Iron ball valve
-Damper actuator
-Dynamic Pressure Balance Electric Regulating Valve
-Dynamic Balance Filter motorized ball valve
-Water Flow Brass Static Balance valve
-Electrical Control Auto compensation Plug valve
-Mechanical thermostat
-Digital thermostat
-Temperature sensor
-Liquid Flow Switch
-HVAC Brass Control Valve(with Actuator)
-HVAC Iron Control Valve(with Actuator)
(2)Refrigeration Parts&Tools:
-Double Manifold gauge sets-Single manifold set-Refrigeration Gauges
-Charging Hose-Quick Couplers-Sight Glass-Hand Valve
-Split Air Conditioning Valve-Refrigeration Ball Valve
-Refrigeration Solenoid Valve-Filling Valve-Can Tap Valve
-Needle Valve-capillary-Comb Slice-Cutting Knife
-Brass Nut-Brass tie-in
-Disperse pipe(refnet joint)
(3)Copper&Brass Pipe Fitting:
-copper Elbow-copper Tee-copper Straight coupling
-copper Reducing Coupling-copper U Bend-copper P-Trap
-Brass Solenoid Valve(water,oil,air)
-Brass Male&Female Eblow
-Brass Male&Female Tee
-Brass Male&Female connector
Wenling Yangyi machinery and electrical Co.,Ltd
with over 10 years experiences,Yangyi gained rich experiebnces and technologies on manufacturing/trading on vacuum pump,recovery machine,tools ,gauge,and scale,leak detector etc.
stand on perfect quality control system and advanced testing equipments,Yangyi produced stable and excellent quality products to customers all over the world,and Yangyi is alsp registered as a well known local brand in Chinese Market,
Following the company's conception of "Technology leads Development,Quality strengthen Viability",Yangyi's production has reached in many fields such as refrigeration maintain,printing machine,medical equipment,vacuum packing,gas analyze and thermoplastic molding etc.
we warmly welcome customers all over the world to visit our company and seek for long term cooperation for future.
Xiamen Bestyn Import & Export Co., Ltd.. is a professional manufacturer of A/C and refrigerator spare parts and tools.We are supplying one-stop products for HVAC system, including compressors, capacitors, contactors, condensers, refrigerant gas, filter driers, charging valves, thermostats, copper fittings and brass fittings, copper coils, copper straight pipes, flaring tools, Manifold gauge and accessories, bend tubes, cutters, etc and so on. Based on modern management and strict quality control, our products are welcome in international market. We have professional sales and skilled technical persons, so we can provide very professional before-sales and after-sales services. Meanwhile, we can also provide OEM and ODM services.
In order to meet our clients' different requests, we are working together with our partner factories from China. Our aim is to supply TOP QUALITY, BEST PRICES and EXCELLENT SERVICES for all of our clients.
Welcome to inquire us.
Taizhou Pengbo E-commerce Co.,Ltd. Is a modern company which is specialized in research, development, production and sales of vacuum pump, vacuum chamber, manifold gauge and their accessories, it is located in the beautiful coastal city - Taizhou, Zhejiang Province. We have the rich technology strength, perfect sales network, and serve old and new customers wholeheartedly. By virtue of the aim of "customer first, quality guarantee", we have won trusts and supports from customers. Warmly welcome partners and customers from all circles to visit us and make the business discussion. Look forward to cooperating with you, developing and creating glorious future together.