butterfly valves and actuators
Wafer Butterfly Valves for Hot Air WBV-H
Wafer butterfly valves designed to control high temperature ambient air or preheated combustion air.
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Overview
Wafer Butterfly Valves are used to trim or control ambient or preheated air. The valve can be ordered with a hand lever or can be supplied with a lever and linkage for automatic control. When sizing wafer butterfly valves for automatic control, normal practice is to size for a valve differential pressure (∆p) of 10-20 % of total available air pressure. When ordering, specify temperature service desired: ambient air to 400 °F, or preheated air to 1200 °F.
Features & Benefits:
Features & Benefits:
- To trim or control ambient or preheated air
- Available with hand lever or with lever and linkage for automatic control
- WBV-H can be used in temperatures of up to 1200 °F for preheated air
- WBV-H can be used in temperatures of up to 400 °F for ambient air
Specifications
Air & Combustion Air Specifications
- Air Capacity
- Capacity values provided at 0.5 in WC and 1.0 in WC Δp by valve size (at 70 deg Open)
Actuation, Valve & Motion Control Specifications
- Valve Type
- Wafer‑style butterfly valve
- Torque Rating
- Static torque table for 32 and 64 osi: 6 in=11/29, 8 in=11/29, 10 in=18/44, 12 in=34/85, 14 in=42/104, 16 in=55/137, 18 in=94/234, 20 in=112/291, 22 in=142/355 in‑lbs
Processing & Performance Metrics
- Sizing Recommendation
- Select for Δp = 10-20% of total available air pressure
- Flow Characteristic
- Full-port, increased flow up to 70 deg , minimal pressure drop at 90 deg
Dimensions & Size Specifications
- Size Range
- 6 to 22 in (larger sizes upon request)
Control, Logic & System Behavior
- Operating Modes
- Manual lever or automatic (lever + linkage)
Maximum/Minimum Temperature Limits
- Maximum Temperature
- Ambient Air - 400 deg F, Preheated Air - 1200 deg F
Applications & Compatibility
- Applications
- Trim or control ambient or preheated air
Air & Combustion Air Specifications
- Air Capacity
- Capacity values provided at 0.5 in WC and 1.0 in WC Δp by valve size (at 70 deg Open)
Actuation, Valve & Motion Control Specifications
- Valve Type
- Wafer‑style butterfly valve
- Torque Rating
- Static torque table for 32 and 64 osi: 6 in=11/29, 8 in=11/29, 10 in=18/44, 12 in=34/85, 14 in=42/104, 16 in=55/137, 18 in=94/234, 20 in=112/291, 22 in=142/355 in‑lbs
Processing & Performance Metrics
- Sizing Recommendation
- Select for Δp = 10-20% of total available air pressure
- Flow Characteristic
- Full-port, increased flow up to 70 deg , minimal pressure drop at 90 deg
Dimensions & Size Specifications
- Size Range
- 6 to 22 in (larger sizes upon request)
Control, Logic & System Behavior
- Operating Modes
- Manual lever or automatic (lever + linkage)
Maximum/Minimum Temperature Limits
- Maximum Temperature
- Ambient Air - 400 deg F, Preheated Air - 1200 deg F
Applications & Compatibility
- Applications
- Trim or control ambient or preheated air
- Air Capacity : Capacity values provided at 0.5 in WC and 1.0 in WC Δp by valve size (at 70 deg Open)
- Valve Type : Wafer‑style butterfly valve
- Torque Rating : Static torque table for 32 and 64 osi: 6 in=11/29, 8 in=11/29, 10 in=18/44, 12 in=34/85, 14 in=42/104, 16 in=55/137, 18 in=94/234, 20 in=112/291, 22 in=142/355 in‑lbs
- Sizing Recommendation : Select for Δp = 10-20% of total available air pressure
- Size Range : 6 to 22 in (larger sizes upon request)
- Operating Modes : Manual lever or automatic (lever + linkage)
- Maximum Temperature : Ambient Air - 400 deg F, Preheated Air - 1200 deg F
- Flow Characteristic : Full-port, increased flow up to 70 deg , minimal pressure drop at 90 deg
- Applications : Trim or control ambient or preheated air
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