Description of Spring Return Zone Valve
spring-return zone valve SW-BBSP series have compact structure,stable operation,excellent capacity of water stoppage, large water flow rate, zero dirt block and low torque. spring-return zone valves are widely used in fan coil units, cooling/ heating system and HVAC system.
How do we control the quality of machining
In production, we demand not only quantity but also quality.
How do we ensure finished product quality (FQC inspection)
1. Visual Inspection
2. Material Grade Measurement
3. Dimension Inspection
4. Roughness Detection
5. Roughness Detection
6. Leakage Test
Application of Spring Return Zone Valve
Fan coil units, cooling/ heating system and HVAC system.
Operational mode of Spring Return Zone Valve
spring-return zone valve is motor-operated by on/off type actuator. The actuator adopts totally closed unidirectional hysteresis synchronous motor, having waterproof design and spring automatic reset function.
Valve body of Spring Return Zone Valve:
Medium: cold/hot water, with 50% glycol Temperature of medium: 0 to 93℃ Rated
pressure: PN20 Pipe connector: internal thread
Ambient temp. range: 0 to 40℃; Size: 1/2’’, 3/4’’ and 1’’ Valve type: 2-way and 3-way
Actuator of Spring Return Zone Valve:
Working voltage: 24VAC 50/60H z, 110/120VAC 50/60H z, 230VAC 50H z/60H z, 208VAC 50/60H z, 277VAC 50/60H z.
On/off time: 13-18s
Spring return time: 4-5s
Motor power: 6.5W, 7 VA
Material of Spring Return Zone Valve:
Valve body: forged brass
Valve seat: brass
Valve stem: chrome-plated brass
Actuator shell: aluminum
Actuator bottom case: stainless steel
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