The Cast Air BLE is the high-flow pilot valve in the Cast Air electric-application lineup. Where the BE2-M handles 1/4" NPT pilot circuits at 20 CFM, the BLE steps up to 1/2" NPT-F inlet and outlet ports with a 60 CFM flow capacity — the correct specification for larger electric dual-application compressors running higher-volume control circuits. If your compressor has 1/2" NPT control ports and the smaller valve is starving the circuit, this is the part you need.
At $123.20, it sits above the BE2-M in the lineup, reflecting the larger port size and higher flow capacity. Same hex brass body, same external pressure and differential adjustment, same corrosion-resistant construction — just sized for the demands of larger compressor control systems.
What the BLE Does
- Application: Electric dual-application air compressors — controls load/unload cycling on larger electric-drive compressor systems
- Valve Type: 2-way pilot valve — two-port design with a clean state change per signal; no complex internals to fail
- Inlet: 1/2" NPT-F — threads into standard 1/2" NPT control circuit ports on larger compressor manifolds
- Outlet: 1/2" NPT-F — full-size outlet maintains flow capacity through the valve without restriction
- Pilot Port: 1/4" NPT-F — larger pilot port than the BE2-M, matched to the higher-flow control circuit
- Flow Capacity: 60 max CFM — three times the flow of the BE2-M; handles larger-bore control lines without pressure drop across the valve
Construction and Adjustment
- Body: Hex brass — corrosion-resistant, machines cleanly, holds threads well in both new installations and replacement scenarios
- Pressure Adjustment: Full external pressure adjustment — no disassembly required to set cut-in and cut-out pressures; adjust in place after installation
- Differential Adjustment: Full external differential adjustment — set the spread between cut-in and cut-out to prevent short-cycling on your specific system
- Pressure Range: 40–250 PSI available; most electric industrial compressor applications run 100–120 PSI or 140–170 PSI range valves — confirm your system operating pressure before ordering
- Corrosion Resistance: Corrosion-resistant construction — built to handle the humidity and temperature variation of production compressor rooms
Where This Valve Fits
- Replacement pilot valves on larger electric reciprocating compressors with 1/2" NPT control circuit ports
- New installation on industrial compressor builds where a full 60 CFM pilot circuit is required
- Upgrade situations where a 1/4" pilot valve has been choking the control circuit — the BLE removes the restriction and lets the control circuit breathe
- Not for gas engine applications — use the BLG for gas engine 1/2" NPT pilot circuits
- Not for 1/4" NPT control circuits — the BE2-M (20 CFM) is the correct fit for smaller-ported compressors
BLE vs. the Cast Air Pilot Valve Lineup
- BE2-M — $91.63: 1/4" NPT-F, 20 CFM, electric dual — smaller compressors with 1/4" control ports
- BLE (this valve) — $123.20: 1/2" NPT-F inlet and outlet, 1/4" NPT-F pilot, 60 CFM, electric dual — larger electric compressors with 1/2" control ports
- BG2-M — $78.54: 1/4" NPT-F, 20 CFM, gas engine version of the BE2-M
- BLG — $147.84: 1/2" NPT-F, 60 CFM, gas engine version of the BLE — same ports as this valve, different application rating
The key decision point between the BE2-M and the BLE is the port size at your compressor. If the manifold has 1/2" NPT pilot ports, you need the BLE. Installing a 1/4" valve into a 1/2" circuit with a reducer bushing works mechanically but creates a flow restriction that can cause control problems at higher demand cycles.
Technical Specifications
- SKU / Part Number: BLE
- Manufacturer: Cast Air (Castair)
- Valve Type: 2-Way Pilot Valve
- Application: Electric Dual
- Inlet Port: 1/2" NPT-F
- Outlet Port: 1/2" NPT-F
- Pilot Port: 1/4" NPT-F
- Maximum Flow: 60 CFM
- Pressure Range: 40–250 PSI (specify range at order)
- Common Range Orders: 100–120 PSI or 140–170 PSI
- Body Material: Hex brass
- Adjustment: External pressure and differential adjustment
- Price: $123.20
Why Buy From Air Compressor Factory Direct?
- Specialist since 2016 — we focus on compressor components; our team can help you confirm whether the BLE is the correct valve for your specific compressor before you order
- Free shipping on orders to the contiguous US
- Free tech support at 866-217-0063 — call with your compressor model and port specs and we will match the valve correctly
- Full manufacturer warranty — Cast Air warrants their parts; we handle warranty claims without delays
- Correct part, first time — we carry the full Cast Air pilot valve lineup so you get the right valve, not the closest approximation
Call 866-217-0063 for quick answers and help!
