Electric lined PTFE butterfly valve and pneumatic lined PTFE butterfly valve
Electric lined PTFE butterfly valve and pneumatic lined PTFE butterfly valve
The following is a comparative analysis of electric PTFE lined butterfly valves and pneumatic PTFE lined butterfly valves, which integrates technical characteristics, application scenarios, and selection points:
1. Comparison of core structures
Parameters Electric lined PTFE butterfly valve Pneumatic lined PTFE butterfly valve
Electric drive for actuator (AC220V/380V), supporting adjustable/switch type pneumatic drive (compressed air), with faster response (0.5-2 seconds)
Lining material PTFE/FEP/PFA, temperature resistance -50 ℃~260 ℃, similar to electric valves, with some temperature resistance up to 300 ℃ (PFA lining)
Sealing performance: Soft seal with zero leakage (ANSI Class VI) dual eccentric structure+four level seal, higher leakage level
Connection method: clamp/flange type, mainly clamp type for DN50~DN1200, lightweight design
2. Performance and Application Scenarios
Electric PTFE lined butterfly valve
Applicable scenarios:
In situations where remote control or automation integration is required (such as chemical DCS systems).
High precision requirements for regulation (such as pharmaceutical and food flow control).
Advantages:
Supports precise adjustment of 4-20mA signals and adapts to complex process flows.
Long maintenance cycle (low failure rate of electric actuators).
Pneumatic lined PTFE butterfly valve
Applicable scenarios:
Flammable and explosive environment (explosion-proof actuator optional).
Quickly cut off needs (such as fire smoke exhaust, emergency shutdown).
Advantages:
Fast action speed (≤ 5 seconds), suitable for frequent opening and closing.
No risk of electric sparks, higher safety.
3. Selection suggestions
Medium characteristics:
Highly corrosive media (such as sulfuric acid, chlorine gas) are preferred to be fully lined with fluorine (PTFE/PFA).
For media containing particles, a double eccentric/triple eccentric structure 910 should be selected.
Environmental requirements:
Pneumatic valves (moisture-proof and explosion-proof) are recommended for outdoor or humid environments.
High cleanliness applications (such as pharmaceuticals) must comply with FDA/GMP standards.
4. Market reference
Price range:
Electric fluorine lined butterfly valve: ¥ 1734.7~¥ 45000.0 (depending on the diameter and lining material).
Pneumatic fluorine lined butterfly valve: ¥ 2888.0~¥ 3540.0 (explosion-proof models are more expensive).
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Product brand: Tianjin Yibiao
Connection form: clamp, flange, clamp, welding
Nominal diameter: DN50~DN3600
Nominal pressure: PN6, PN10, PN16, PN25
Test pressure: nominal pressure x 0.09 times
Exterior spraying: spraying
Drive forms: manual, pneumatic, electric, hydraulic
