Hengsen danfoss type welding sight glass

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.
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
If you are interesting in our products and service,
Please contact with us, Thanks.