Product Models

• Model PBE: Standard (¼″ bronze, high capacity)
• Model PBE H: High-flow (½″ bronze, mid-pressure design)
• Model PBE L: Low-flow (½″ bronze, precise low-range)

Common Features

• Dual-function design: pressure build + relief above SP
• Single compact FNPT body: ¼″ or ½″
• Max operating: up to 600 psig (41.4 bar)
• Cryogenic rated: –325 °F to +150 °F
• Construction: bronze with CTS/SS trim options
• Self-aligning floating seat: for tight shutoff
• Excellent Cv: 0.49–1.21 depending on model
• Application: liquefied gas tank control

Model-Specific Details

Model PBE – Standard Economics

Compact ¼″ valve for general economizer use with moderate capacity.

• Line size: ¼″ FNPT
• Max inlet/outlet: 600 psig
• Set ranges: 2–600 psig (multiple springs)
• Cv max: 0.49
• Temp range: –325 °F to +150 °F
• Material: Bronze; PTFE seat; SST diaphragm
• Body/seat: Self-aligning, floating PTFE seat
• Use: tanks where auto-relief is required

Model PBE H – High-Flow Economizer

½″ high-capacity bronze valve with elevated flow capability suited for larger tanks.

• Line size: ½″ FNPT
• Max pressure: 250 psig inlet/outlet
• Set ranges: 2–250 psig (multi-spring)
• Cv max: 1.80
• Temp: –325 °F to +150 °F
• Material & features: Bronze body, SST spring; same seat/diaphragm design
• Economizer opens: ~10 psig above build-point

Model PBE L – Low-Flow Economizer

½″ unit optimized for precise control in small tanks or low-pressure systems.

• Line size: ½″ FNPT
• Max pressure: 600 psig
• Set ranges: 3–600 psig (multi-spring)
• Cv max: 1.21
• Temperature range: –325 °F to +150 °F
• Body/seat: Self-aligning PTFE seat, SST diaphragm
• Economizer opens: 10–25 psig above setpoint

Applications

• Liquefied gas storage tanks (e.g., LPG, LNG)
• Automatic tank pressure control
• Economizer relief in vapor return systems
• Cryogenic and high-purity fluid services

Notable Features

• Dual-stage action: build pressure, then relieve excess
• Cryogenic compatibility: –325 °F rating
• Floating seat design prevents leakage & wear
• Bronze body with robust SST trim for durability
• Compact FNPT installation with minimal footprint
• Smooth economizer start ensures seamless control

Why Choose Cashco PBEs

• All-in-one build/relief performance
• Accurate setpoints with minimal droop
• High reliability in cryogenic operations
• Compact, easy to install FNPT design
• Varied sizes to match tank volumes

Conclusion

Cashco Pressure Build Economizers offer a sophisticated yet compact solution for tank pressure management. With integrated economizer relief, cryogenic readiness, and robust Cv capacities, these units are ideal for liquefied gas applications.