Is the Hydraulic 2-Way Valve with Metric External Thread, Type BKH L/S X suitable for continuous operation at -40°C to +100°C?

Yes. The Hydraulic 2-Way Valve with Metric External Thread, Type BKH L/S X is suitable for continuous operation from -40°C to +100°C for the POM ball seal and -20°C to +100°C for the NBR stem seal. Therefore, the valve can operate continuously across the full -40°C to +100°C range only if the application’s lowest temperature does not require NBR below -20°C or if the stem seal is alternatively specified with a lower-temperature material. If your system will see temperatures between -40°C and -20°C, verify or request a stem seal material rated for that range; otherwise the valve meets the stated continuous-operation temperature requirements.

Can the Hydraulic 2-Way Valve with Metric External Thread, Type BKH L/S X be used with fluids incompatible with NBR seals without compromising performance?

No — the Hydraulic 2-Way Valve with Metric External Thread, Type BKH L/S X should not be used with fluids that are incompatible with NBR seals if you need to maintain rated performance and leak-tightness. The valve’s stem sealing relies on NBR (nitrile rubber), which has a specified safe temperature range of −20°C to +100°C and specific chemical compatibility limits. Exposure to fluids that swell, harden, crack, or dissolve NBR (e.g., many ketones, strong acids/bases, some ester-based hydraulic fluids, certain brake fluids, fuels, or aggressive solvents) will degrade the stem seal, leading to leaks, reduced actuation reliability, shortened service life, and potential system failure. If your fluid is incompatible: - Consider selecting alternative seal materials (e.g., FKM/Viton, EPDM, or PTFE) compatible with your fluid and temperature conditions. - Verify overall compatibility with the valve’s POM ball seals and the steel construction. - Run compatibility tests or consult the valve manufacturer for approved seal options or a compatible variant. In summary, avoid using incompatible fluids with the standard NBR-sealed Hydraulic 2-Way Valve with Metric External Thread, Type BKH L/S X unless you replace or confirm a suitable seal material.

Hydraulic 2-Way Valve with Metric External Thread, Type BKH L/S X

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Additional information

Material	CS – steel (cast iron)

The two-way ball valve type BKH L/S with external metric thread according to DIN 2353 is a reliable solution designed for demanding high-pressure hydraulic systems. Available in both light (L) and heavy (S) series, it ensures flexibility of use across a wide range of applications. Manufactured entirely from durable steel, including the body, ball, and stem, the valve guarantees long service life and resistance to mechanical stress. The sealing system is optimized with POM for the ball and NBR for the stem, providing excellent tightness and operational safety. With an operating temperature range from -40°C to +100°C for POM and from -20°C to +100°C for NBR, the valve maintains consistent performance even in extreme conditions. Its robust construction, precise threading, and compliance with DIN standards make it an ideal choice for industries requiring reliability, efficiency, and secure hydraulic flow control.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HZ-BKH-06LX	Two-way valve DN6 with GZ M12x1.5, POM/NBR, lightweight	6	500	In stock	Enquiry
HZ-BKH-08LX	Two-way valve DN6 with GZ M14x1.5, POM/NBR, lightweight	6	500	In stock	Enquiry
HZ-BKH-08SX	Two-way valve DN6 with GZ M16x1.5, POM/NBR, heavy	6	500	In stock	Enquiry
HZ-BKH-10LX	Two-way valve DN6 with GZ M16x1.5, POM/NBR, lightweight	6	500	In stock	Enquiry
HZ-BKH-10SX	Two-way valve DN6 with GZ M18x1.5, POM/NBR, heavy	6	500	In stock	Enquiry
HZ-BKH-12LX	Two-way valve DN10 with GZ M18x1.5, POM/NBR, lightweight	10	500	In stock	Enquiry
HZ-BKH-12SX	Two-way valve DN6 with GZ M20x1.5, POM/NBR, heavy	6	500	In stock	Enquiry
HZ-BKH-14SX	Two-way valve DN10 with GZ M22x1.5, POM/NBR, heavy	10	500	In stock	Enquiry
HZ-BKH-15LX	Two-way valve DN13 with GZ M22x1.5, POM/NBR, lightweight	12	500	In stock	Enquiry
HZ-BKH-16SX	Two-way valve DN10 with GZ M24x1.5, POM/NBR, heavy	10	500	In stock	Enquiry
HZ-BKH-18LX	Two-way valve DN13 with GZ M26x1.5, POM/NBR, lightweight	12	500	In stock	Enquiry
HZ-BKH-20SX	Two-way valve DN13 with GZ M30x2, POM/NBR, heavy	12	500	In stock	Enquiry
HZ-BKH-22LX	Two-way valve DN20 with GZ M30x2, POM/NBR, lightweight	20	400	In stock	Enquiry
HZ-BKH-25SX	Two-way valve DN20 with GZ M36x2, POM/NBR, heavy	20	400	In stock	Enquiry
HZ-BKH-28LX	Two-way valve DN25 with GZ M36x2, POM/NBR, lightweight	25	350	In stock	Enquiry
HZ-BKH-30SX	Two-way valve DN25 with GZ M42x2, POM/NBR, heavy	25	350	In stock	Enquiry

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The two-way ball valve type BKH L/S with external metric thread according to DIN 2353 is a reliable solution designed for demanding high-pressure hydraulic systems. Available in both light (L) and heavy (S) series, it ensures flexibility of use across a wide range of applications. Manufactured entirely from durable steel, including the body, ball, and stem, the valve guarantees long service life and resistance to mechanical stress. The sealing system is optimized with POM for the ball and NBR for the stem, providing excellent tightness and operational safety. With an operating temperature range from -40°C to +100°C for POM and from -20°C to +100°C for NBR, the valve maintains consistent performance even in extreme conditions. Its robust construction, precise threading, and compliance with DIN standards make it an ideal choice for industries requiring reliability, efficiency, and secure hydraulic flow control.