HTS Hauck – B, F, G & K Micro Cam Oil Valves (MCOV)

Overview

Hauck Micro-Cam oil valves (MCOV) provide accurate, reproducible flow control of fuel oil to industrial process equipment, making the operation of oil-fired heat processing systems more dependable. Available in B, F, G, and K series, these valves are designed to handle all grades of fuel oil — including heavy residuals — as well as liquid propane (LP).

The MCOV series features solid cold-rolled steel body construction with heat-tempered components for long service life. A zero-maintenance design resists fouling without routine servicing, and a precision micro-cam metering mechanism delivers consistent, repeatable flow characteristics across modulating, manual, and actuator-coupled configurations.

Features & Benefits

• All-purpose liquid fuel valve suitable for all grades of fuel oil including heavy residuals and LP — broad media compatibility for diverse process applications
• Precision micro-cam metering principle using a knife-edge rotating against a V-slot delivers accurate, repeatable flow control across the full operating range
• Solid cold-rolled steel body construction, precision machined and heat tempered — ensures mechanical durability and long service life in demanding industrial environments
• Zero-maintenance design prevents fouling and eliminates scheduled servicing requirements
• Configurable for manual operation, linked actuator, or direct-coupled actuator — supports a wide range of burner system integration methods
• Suitable for metering or limiting fuel flow in main or bypass fuel supply circuits
• UL Listed B and F series valves — documented third-party approval for applicable installations
• Oil valves rated to 225 PSI; LP valves rated to 250 PSI — robust pressure capability for typical industrial burner service

Technical Specifications

• Valve Series: B, F, G, K
• Body Material: Cold rolled steel (hardened and ground)
• Pressure Rating — Oil: 225 PSI
• Pressure Rating — LP: 250 PSI
• Fuel Type: All grades of fuel oil (including heavy residuals), liquid propane (LP)
• Control Principle: Micro-cam with knife-edge rotating against V-slot to meter flow
• Flow Control — B Series: Linear
• Flow Control — F, G, K Series: Non-linear
• Operation Type — B Series: Manual (handwheel) or automatic
• Operation Type — F, G, K Series: Automatic
• Control Type: Handwheel (manual); threaded wheel for actuator coupling (automatic)
• Metering Capability: B series suitable for metering in gallons/hr
• Maintenance Interval: None (zero-maintenance design)
• Approvals: B and F series — UL Listed

Applications

• Accurate, repeatable control and limitation of liquid fuel flow to industrial burners
• Oil-fired industrial heating and heat processing equipment
• Modulating fuel flow manually, with a linked actuator, or a direct-coupled actuator
• Limiting liquid fuel flow in main or bypass fuel supply circuits
• Industrial process applications requiring dependable, reproducible fuel metering

Models / Configurations

• B Series – Manual (handwheel) or automatic operation; linear flow characteristic; UL Listed; suitable for metering fuel oil in gallons/hr; available in 1/2″ body size with multiple cam width configurations
• F Series – Automatic operation with threaded wheel for actuator coupling; non-linear flow characteristic; UL Listed
• G Series – Automatic operation; non-linear flow characteristic
• K Series – Automatic operation; non-linear flow characteristic

MCOV Accessories

Consult the MCOV product brochure and operating instructions for compatible actuators and actuator coupling hardware. Contact us for accessories availability.

• Limit Switch Option – Available on select B series models (e.g., HK12503R0241, HK12519R0159) for position feedback integration with burner management systems
• Direct-Coupled Actuators – Compatible actuators for automatic modulating service; consult factory for selection guidance

Documentation