The HYDAC KHMFF-40 / 5011121 is a high-performance 2-way ball valve engineered for reliable shut-off and flow control in demanding hydraulic and industrial systems. Featuring a robust stainless steel construction, this flange-type valve delivers exceptional durability and corrosion resistance for long service life in challenging environments .
Designed on the proven “floating ball” principle, the valve ensures a positive seal at both low and high pressures. Fluid pressure acts on the upstream surface of the ball, creating constant, uniform contact between the downstream ball seal and the ball for reliable, leak-tight shut-off .
Key Features & Benefits
- Stainless Steel Construction: Provides superior corrosion resistance and durability for use with various fluids and gases, including petroleum-based oils and water glycols .
- 2-Way Flow Direction: Ideal for on/off flow control applications.
- Flange Connection (FNPT): Designed for secure, leak-resistant integration into piping systems. Flange connections to DIN 2501 ensure compatibility with standard industrial pipework .
- Full-Port Ball Drilling: Allows for unrestricted, full-flow passage, minimizing pressure drop across the valve .
- Manual Operation: Equipped with a sturdy handle for easy actuation. Handle styles may include cranked (bolt-on) or offset designs. Locking device options are available to secure against unintended operation .
- Blow-Out Proof Stem: Enhances safety by preventing accidental stem ejection under pressure .
Technical Specifications
| Specification | Detail |
|---|---|
| Type | 2-Way Ball Valve |
| Material | Stainless Steel (Body, Ball, Handle) |
| Connection | Flanged (FNPT / DIN 2501) |
| Nominal Size | DN 40 |
| Max. Operating Pressure | Dependent on seal materials selected; up to 7250 psi for standard configurations |
| Max. Operating Temperature | Up to 400 °F with specific seal materials |
| Min. Operating Temperature | Down to 14 °F (standard materials) |
| Ball Seal Material | POM (Polyacetal) standard; PTFE options available for corrosive media |
| O-Ring Material | FKM standard |
Applications
- Hydraulic power units
- Industrial machinery and equipment
- Marine systems
- Mobile hydraulic applications
- Fluid handling systems requiring corrosion-resistant components































