Is the Hydraulic 2-Way Valve with BSP Female Thread, Type BKHX suitable for continuous operation at -40°C to +100°C in high-pressure hydraulic systems?

Yes. The Hydraulic 2-Way Valve with BSP Female Thread, Type BKHX is suitable for continuous operation at -40°C to +100°C in high-pressure hydraulic systems. Its steel body, ball, and stem provide high-pressure strength, while POM seals on the ball and NBR stem seals are specified for excellent wear, leakage resistance, and temperature stability across that range. The valve’s design for extreme conditions and durable construction support reliable, long-term service and safe integration in demanding industrial hydraulic applications.

Can the Hydraulic 2-Way Valve with BSP Female Thread, Type BKHX be used with aggressive hydraulic fluids without compromising its POM and NBR seals?

Hydraulic 2-Way Valve with BSP Female Thread, Type BKHX uses POM (polyoxymethylene) seals for the ball and NBR (nitrile rubber) seals for the stem. Both materials are commonly used in hydraulic systems and offer good wear resistance and temperature performance within the specified range (-40°C to +100°C). However, their chemical compatibility with aggressive hydraulic fluids varies: - POM: Good resistance to hydrocarbons and many hydraulic oils, but can be attacked by strong acids, strong bases, chlorinated solvents, and certain ketones. Prolonged exposure to aggressive additives or synthetic fluids outside its compatibility list can cause swelling, embrittlement or loss of mechanical properties. - NBR: Excellent resistance to mineral oils and many petroleum-based hydraulic fluids and additives, but limited resistance to some synthetic fluids, phosphate esters, ketones, and certain aggressive chemicals (e.g., ozone, strong acids, some brake fluids). Heat and aggressive additives accelerate degradation. Conclusion: Hydraulic 2-Way Valve with BSP Female Thread, Type BKHX is suitable for standard mineral-oil-based and many common hydraulic fluids without compromise. For aggressive or unusual hydraulic fluids (synthetic fluids, phosphate esters, strong additives, solvents, acids/bases), compatibility cannot be guaranteed—seal degradation and leakage are possible. Recommend verifying fluid formulation against POM and NBR compatibility charts or consulting the fluid and seal manufacturers; consider valves with chemically resistant seals (e.g., PTFE, FKM, EPDM) if required.

Hydraulic 2-Way Valve with BSP Female Thread, Type BKHX

All products, Directional control valves/

Additional information

Material	CS – steel (cast iron)
Standard length [m]	20

This robust two-way ball valve is engineered for demanding hydraulic systems, offering reliable performance under high pressure thanks to its durable steel body, ball, and stem construction. Equipped with internal BSP threads and practical mounting holes in the housing, it ensures easy installation and secure integration into a wide range of setups. The valve features precision-engineered POM seals for the ball and NBR seals for the stem, delivering excellent resistance to wear, leakage, and temperature fluctuations. Designed to operate seamlessly in extreme conditions from -40°C to +100°C, it guarantees consistent functionality and long service life. Its compact yet solid design makes it an ideal choice for industrial applications where safety, efficiency, and durability are essential, providing users with a dependable solution that enhances system reliability and minimizes downtime.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
HZ-BKH-G-04X	Two-way valve DN6 with 1/4" BSP thread, POM/NBR	6	500
HZ-BKH-G-06X	Two-way valve DN10 with 3/8" BSP female thread, POM/NBR	10	500
HZ-BKH-G-08X	Two-way valve DN13 with 1/2" BSP thread, POM/NBR	12	500
HZ-BKH-G-12X	Two-way valve DN20 with 3/4" BSP thread, POM/NBR	20	500
HZ-BKH-G-16X	Two-way valve DN25 with 1" BSP thread, POM/NBR	25	500
HZ-BKH-G-20X	Two-way valve DN32 with 1.1/4" BSP thread, POM/NBR	20	350
HZ-BKH-G-24X	Two-way valve DN40 with 1.1/2" BSP thread, POM/NBR	40	350
HZ-BKH-G-32X	Two-way valve DN50 with 2" BSP thread, POM/NBR	50	350

This robust two-way ball valve is engineered for demanding hydraulic systems, offering reliable performance under high pressure thanks to its durable steel body, ball, and stem construction. Equipped with internal BSP threads and practical mounting holes in the housing, it ensures easy installation and secure integration into a wide range of setups. The valve features precision-engineered POM seals for the ball and NBR seals for the stem, delivering excellent resistance to wear, leakage, and temperature fluctuations. Designed to operate seamlessly in extreme conditions from -40°C to +100°C, it guarantees consistent functionality and long service life. Its compact yet solid design makes it an ideal choice for industrial applications where safety, efficiency, and durability are essential, providing users with a dependable solution that enhances system reliability and minimizes downtime.