Body & Internal Components
- Cast DZR brass valve body manufactured from CC752S.
- DZR brass upper part and valve cone manufactured from CW602N.
- Brass spindle manufactured from CW617N.
- EPDM valve sealing.
Non-Rising Spindle Globe Valve
HERZ STRÖMAX-D 4125 Non-Rising Spindle Globe Valve
4125 Series — Compact DZR Brass PN20 Shut-Off Valve
HERZ STRÖMAX-D 4125 Non-Rising Spindle Globe Valve from HERZ Armaturen is a compact DZR brass shut-off valve designed for hydronic heating, cooling, domestic-water, and branch isolation applications. Its non-rising spindle is suited to installations with restricted vertical space, while the double O-ring spindle sealing, EPDM seat, PN20 pressure rating, BSP female threaded connections, and optional drain fittings support dependable system isolation and maintenance.
Manufactured by
HERZ Armaturen
Technical Downloads
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HERZ STRÖMAX-D 4125 Non-Rising Spindle Globe Valve
Review the confirmed product information, including construction, operating conditions, shut-off features, benefits, and hydronic-system applications.
HERZ STRÖMAX-D 4125 Non-Rising Spindle Globe Valve from HERZ Armaturen is a compact DZR brass shut-off valve designed for heating, cooling, domestic-water, and hydronic-isolation applications.
Its non-rising spindle design reduces the vertical clearance required during valve operation, making the product suitable for confined plantrooms, service spaces, branch circuits, and installations with restricted access.
The valve body is manufactured from cast CC752S DZR brass, while the upper part and valve cone use CW602N DZR brass. A CW617N brass spindle, EPDM seat, and double O-ring spindle sealing support dependable shut-off and long-term corrosion-resistant operation.
The HERZ STRÖMAX-D 4125 has a PN20 pressure rating, an operating-temperature range from -10°C to +110°C, BSP female threaded connections, and optional drainage capability to support commissioning and system maintenance.
Design & Manual Operation
- Compact non-rising spindle construction.
- Suitable for installations with limited vertical clearance.
- Red polyamide handwheel for manual operation.
- Flow direction is indicated on the valve body.
Pressure & Temperature
- Nominal pressure rating: PN20.
- Operating-temperature range from -10°C to +110°C.
- Maximum differential pressure when closed: 10 bar.
- Suitable for hot- and cold-water applications.
Connections, Sealing & Drainage
- BSP female threaded pipe connections.
- Double O-ring spindle sealing.
- Optional drain-port configuration.
- Designed for isolation, commissioning, and maintenance duties.
Space-Saving Operation
The non-rising spindle does not require additional vertical movement above the valve, supporting installation in restricted service areas.
Corrosion-Resistant Construction
DZR brass construction provides resistance to dezincification and supports long-term use in demanding water conditions.
Dependable Spindle Sealing
The double O-ring spindle-sealing arrangement supports reliable operation with limited maintenance requirements.
Reliable System Isolation
The globe-valve construction and EPDM seat provide dependable shut-off for heating, cooling, and domestic-water circuits.
Optional Drainage Capability
Optional drain ports can simplify commissioning, controlled draining, and servicing of isolated system sections.
Compact, Durable Design
The compact threaded construction supports straightforward installation in branch lines, building services, and mechanical networks.
The HERZ STRÖMAX-D 4125 is designed for water-based mechanical systems requiring compact manual shut-off, dependable isolation, and optional drainage in areas with limited installation space.
Heating-Water Lines
Heating distribution circuits requiring compact threaded isolation valves for service and maintenance.
Cooling-Water Lines
Cooling and chilled-water distribution lines requiring dependable manual shut-off and limited installation clearance.
Branch Circuits
Hydronic branch circuits requiring isolation of equipment, terminal units, or individual system sections.
Domestic Hot-Water Systems
Building-services and domestic hot-water installations requiring DZR brass construction and BSP threaded connections.
General Shut-Off Applications
General manual shut-off duties in HVAC and mechanical networks where compact non-rising spindle operation is required.
Commissioning & Drainage Points
Isolation locations requiring optional drainage to support system commissioning, servicing, and maintenance.
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