C504 Class 125 Ductile Iron Butterfly Valve Manual Control For Water Gas Oil

C504 Class 125 Ductile Iron Butterfly Valve Manual Control For Water Gas Oil​

1. Introduction

Butterfly valve is a simple structure of the regulating valve, but also can be used for low-pressure pipeline media switching control. Ventilation butterfly valve is a kind of non-closed type butterfly valve. Main products: large ventilation butterfly valve, electric ventilation butterfly valve, leakage rate of 0, explosion-proof ventilation butterfly valve.

2. Classification

According to the working pressure
(1) Vacuum butterfly valve. Working pressure is lower than the standard pile of atmospheric calendar butterfly valve.
(2) low-pressure butterfly valve. Nominal pressure PN <1.6MPa butterfly valve.
(3) medium pressure butterfly valve. Nominal pressure PN 2.5 - 6.4MPa butterfly valve.
(4) high-pressure disk valve. Nominal pressure PN 10.0 - 80.0MPa butterfly valve.
(5) ultra-high pressure butterfly valve. Nominal pressure PN> 100MPa butterfly valve.

According to the operating temperature
(1) high-temperature butterfly valve. t> 450 ℃ butterfly valve
(2) medium-temperature disk valve. 120 C <t <450 C butterfly valve
(3) room temperature butterfly valve. A 40 C <t <; 120 C butterfly valve
(4) Low temperature butterfly valve. A 100 <t < 40 C butterfly valve
(5) Ultra-low temperature butterfly valve. t < 100 C butterfly valve

According to the connection
(1)Clamped butterfly valve
(2) flange butterfly valve
(3)Lug type butterfly valve
(4) welded butterfly valve

3. Parameter