Body & Internal Components
- Cast-iron valve body manufactured from GJL 250 according to EN 1561.
- Brass upper section.
- EPDM soft-seated valve sealing.
- Robust construction for large hydronic systems.
Flanged Globe Valve
HERZ STRÖMAX-AGF 4218 Flanged Globe Valve
4218 Series — Cast Iron PN16 Shut-Off Valve
HERZ STRÖMAX-AGF 4218 Flanged Globe Valve from HERZ Armaturen is a cast-iron shut-off and commissioning valve designed for heating, cooling, district-energy, and water systems. Its compact non-rising spindle, soft-seated EPDM sealing, PN16 pressure rating, DN25–DN80 size range, and EN 1092-2 flanged connections support dependable isolation in central HVAC plants and large hydronic networks. A lead-free epoxy protective coating provides additional corrosion and mechanical-wear protection.
Manufactured by
HERZ Armaturen
Technical Downloads
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HERZ STRÖMAX-AGF 4218 Flanged Globe Valve
Review the confirmed product information, including construction, operating conditions, shut-off features, benefits, and large-scale hydronic applications.
HERZ STRÖMAX-AGF 4218 Flanged Globe Valve from HERZ Armaturen is a cast-iron shut-off and commissioning valve designed for central heating, cooling, district-energy, and water systems.
Its cast-iron GJL 250 body provides robust construction for large hydronic installations, while the brass upper section and EPDM soft seat support dependable operation and tight shut-off.
The compact non-rising spindle design limits the vertical clearance required during valve operation and supports installation in plantrooms, heat-exchanger circuits, and confined mechanical-service areas.
Available in sizes DN25 to DN80, the valve has a PN16 pressure rating and an operating-temperature range from -10°C to +110°C. Its protective alkyd-resin primer and lead-free epoxy topcoat provide additional resistance to corrosion and mechanical wear.
Design & Operation
- Compact non-rising spindle design.
- Manual operation without upward spindle travel.
- Suitable for different approved mounting positions.
- Designed for shut-off and commissioning duties.
Connections & Sizes
- Flanged pipe connections according to EN 1092-2.
- Available in nominal sizes from DN25 to DN80.
- Face-to-face dimensions according to the referenced ÖNORM EN 558-1 standard.
- Suitable for central mechanical and hydronic networks.
Pressure & Temperature
- Nominal pressure rating: PN16.
- Operating-temperature range from -10°C to +110°C.
- Suitable for heating-water systems.
- Suitable for cooling and water-system applications.
Protective Coating
- Alkyd-resin primer coating.
- Lead-free epoxy topcoat.
- Protective finish for corrosion resistance.
- Helps protect against mechanical wear in plantroom environments.
Accessories & System Support
- Compatible with suitable HERZ test accessories.
- Compatible with suitable HERZ drain accessories.
- Supports system commissioning and maintenance.
- Suitable for isolation points in large HVAC networks.
Robust Cast-Iron Construction
The GJL 250 cast-iron body provides the strength required for central heating, cooling, and large hydronic installations.
Compact Non-Rising Spindle
The spindle operates without upward movement, reducing the vertical installation clearance required around the valve.
Dependable Shut-Off
The soft-seated EPDM sealing arrangement supports tight valve closure in heating, cooling, and water circuits.
Corrosion-Resistant Protection
The alkyd-resin primer and lead-free epoxy topcoat help protect the valve body from corrosion and mechanical wear.
Long Service Life
Durable construction and dependable spindle sealing support reliable operation in central plant and mechanical-service environments.
Accessory Compatibility
Compatibility with suitable HERZ test and drain accessories supports commissioning, system checking, draining, and maintenance.
The HERZ STRÖMAX-AGF 4218 is designed for flanged mechanical systems requiring robust shut-off, commissioning support, compact spindle operation, and reliable isolation in large hydronic networks.
Heating-Water Systems
Central heating circuits requiring robust flanged isolation valves and dependable manual shut-off.
Cooling-Water Systems
Cooling and chilled-water networks requiring PN16 flanged valves for system isolation and maintenance.
Hydronic Balancing Networks
District-energy and large hydronic networks requiring commissioning support and controlled system isolation.
Heat Exchangers & Plantrooms
Heat-exchanger connections and plantroom installations where compact non-rising spindle operation is useful.
HVAC & Water Shut-Off Duty
General shut-off and maintenance-isolation duties in HVAC, mechanical-service, and water-system networks.
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