Product classification

Ventilation Butterfly Valve

Ventilation butterfly valve features lightweight design, quick operation, reliable sealing, low pressure drop, versatile connection types, wide temperature range, applicable for dust, gas, flue gas, vacuum, high pressure.

Category:

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keywords:

Ventilation butterfly valve

Rubber seated ventilation butterfly valve

Soft seated ventilation butterfly valve

Metal seated ventilation butterfly valve

Leak proof ventilation butterfly valve

Wafer ventilation butterfly valve

Lug type ventilation butterfly valve

Product Description

Nominal diameter: DN50–2000 mm
Nominal pressure PN (MPa): 0.05, 0.25, 0.6
Strength test (MPa): 0.075, 0.375, 0.9
Sealing test: Leakage ≤ 1.5%
Applicable medium: Coal gas, dust-laden gas, flue gas, etc.
Applicable temperature: −10 to 250 °C

Classification by working pressure:
Vacuum butterfly valve: Operating pressure below atmospheric pressure.
Low-pressure butterfly valve: PN < 1.6 MPa.
Medium-pressure butterfly valve: PN = 2.5–6.4 MPa.
High-pressure butterfly valve: PN = 10.0–80.0 MPa.
Ultra-high-pressure butterfly valve: PN > 100 MPa.

Classification by working temperature:
High-temperature butterfly valve: T > 450 °C
Medium-temperature butterfly valve: 120 °C < T < 450 °C
Normal-temperature butterfly valve: −40 °C < T < 120 °C
Low-temperature butterfly valve: −100 °C < T < −40 °C
Ultra-low-temperature butterfly valve: T < −100 °C

Butterfly Valves