What are the recommended pressure limits and maintenance intervals for the Hydraulic three-way valve "L" with internal thread BSP, type BK3LX to ensure safe operation with POM and NBR seals?

Hydraulic three-way valve "L" with internal thread BSP, type BK3LX . recommended limits and maintenance intervals for safe operation with POM (ball) and NBR (stem) seals: Pressure limits - Maximum continuous working pressure: 250 bar. - Short-term/momentary peak pressure: do not exceed 300 bar. - Avoid pressure spikes and water hammer; use dampeners or slow-actuation controls if system dynamics risk transient peaks above 250â300 bar. Temperature-related derating - Full pressure rating up to +100Â°C. - For temperatures below -20Â°C (NBR limit) expect reduced stem-seal flexibility; do not operate under full pressure below -20Â°C unless using heated/controlled environment. - For temperatures below -40Â°C avoid use (POM limit). Above +100Â°C avoid continuous service. Maintenance intervals - Visual inspection: every 3 months . check for external leaks, corrosion, mounting integrity, and actuator linkage. - Functional test: every 6 months . operate valve through full stroke to detect sticking, unusual resistance or leakage. - Seal and wear inspection/replacement: every 12 months under normal operating conditions. Replace POM ball and NBR stem seals if wear, hardening, cracking or leakage observed. - Heavy-duty/continuous high-pressure service or aggressive fluids: shorten intervals to every 3â6 months for seal checks and consider annual replacement. - After any overpressure event or temperature excursion beyond limits: inspect immediately and replace seals as needed. Additional recommendations - Use clean hydraulic fluid, fitted filtration (recommended <10 Î¼m), and maintain correct lubrication to extend seal life. - Torque fittings to manufacturer specs, avoid misalignment at installation, and ensure correct mounting using body holes.

Can Hydraulic three-way valve "L" with internal thread BSP, type BK3LX be used with fluids outside the specified temperature ranges for POM and NBR seals?

No - Hydraulic three-way valve "L" with internal thread BSP, type BK3LX must not be used with fluids outside the specified temperature ranges for its seals. The POM ball seal is rated for -40Â°C to +100Â°C and the NBR stem seal for -20Â°C to +100Â°C; exposure beyond these limits risks seal hardening, swelling, loss of elasticity, leakage, accelerated wear or sudden failure. If your fluid or operating temperature falls outside these ranges, select seals and materials compatible with the actual temperature and fluid chemistry or consult the manufacturer for approved alternatives.

How should Hydraulic three-way valve "L" with internal thread BSP, type BK3LX be installed to prevent seal damage?

To prevent seal damage when installing the Hydraulic three-way valve "L" with internal thread BSP, type BK3LX, follow these guidelines: 1. Cleanliness: Ensure all piping and fittings are clean and free of debris, welding slag, chips or dirt before connecting to the valve. Contaminants can abrade POM and NBR seals. 2. Proper alignment and support: Align piping so the valve is not subjected to bending, torsion or axial loads. Support adjacent pipes to avoid transmitting mechanical stresses to the valve body and stems, which can distort seals. 3. Use correct thread engagement and sealing method: Thread the valve onto matching BSP male threads of the proper size and tolerance. Use an appropriate non-hardening thread sealant or PTFE tape applied only to the male thread (avoid tape entering the valve). Do not overfill threads with sealant that could get inside the flow path and damage POM seals. 4. Avoid over-tightening: Tighten fittings to the manufacturerâs recommended torque or to a snug, leak-free fit. Excessive torque can deform the steel body, ball or seats and damage POM and NBR seals. If no torque spec is available, tighten hand-tight plus 1â2 turns with a wrench, checking alignment and operation. 5. Controlled pressure and direction during initial commissioning: Gradually pressurize the system to operating pressure, bleeding trapped air slowly. Rapid pressure spikes can move or extrude seals. Confirm valve ports are correctly positioned for flow direction to avoid unexpected pressure on closed seats. 6. Temperature considerations: Ensure system fluid and ambient temperatures remain within the sealsâ rated ranges (POM: â40Â°C to +100Â°C; NBR: â20Â°C to +100Â°C). Avoid exposing the valve to temperatures outside these limits which can harden, swell or otherwise degrade seals. 7. Compatible fluids: Use hydraulic fluids compatible with POM and NBR to prevent chemical swelling or degradation. Check fluid compatibility charts if unsure. 8. Avoid mechanical impact: Do not strike the valve body, stem or handle with tools. Mechanical shocks can nick sealing surfaces. 9. Post-installation check: Operate the valve through its full range to seat the ball and confirm smooth motion and absence of leaks. Recheck connections after initial pressurization. Following these steps will minimize risk of damaging the POM ball seals and NBR stem seals in the Hydraulic three-way valve "L" with internal thread BSP, type BK3LX.

Hydraulic three-way valve “L” with internal thread BSP, type BK3LX

Q: Can Hydraulic three-way valve "L" with internal thread BSP, type BK3LX be used with fluids outside the specified temperature ranges for POM and NBR seals?

No - Hydraulic three-way valve "L" with internal thread BSP, type BK3LX must not be used with fluids outside the specified temperature ranges for its seals. The POM ball seal is rated for -40Â°C to +100Â°C and the NBR stem seal for -20Â°C to +100Â°C; exposure beyond these limits risks seal hardening, swelling, loss of elasticity, leakage, accelerated wear or sudden failure. If your fluid or operating temperature falls outside these ranges, select seals and materials compatible with the actual temperature and fluid chemistry or consult the manufacturer for approved alternatives.

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Additional information

Material	CS – steel (cast iron)

High-quality three-way ball valve type “L” with internal BSP threads and mounting holes in the body, designed for high-pressure hydraulic installations. Material: steel (body, ball, stem). Seals: POM (ball), NBR (stem). Operating temperature: from -40°C to +100°C (POM); from -20°C to +100°C (NBR).

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HZ-BK3L-G-04X	Three-way valve "L" DN6 with 1/4" BSP thread, POM/NBR	6	500	In stock	Enquiry
HZ-BK3L-G-06X	Three-way valve "L" DN10 with 3/8" BSP thread, POM/NBR	10	500	In stock	Enquiry
HZ-BK3L-G-08X	Three-way valve "L" DN13 with 1/2" BSP thread, POM/NBR	12	500	In stock	Enquiry
HZ-BK3L-G-12X	Three-way valve "L" DN20 with 3/4" BSP thread, POM/NBR	20	500	In stock	Enquiry
HZ-BK3L-G-16X	Three-way valve "L" DN25 with 1" BSP thread, POM/NBR	25	500	In stock	Enquiry

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High-quality three-way ball valve type “L” with internal BSP threads and mounting holes in the body, designed for high-pressure hydraulic installations. Material: steel (body, ball, stem). Seals: POM (ball), NBR (stem). Operating temperature: from -40°C to +100°C (POM); from -20°C to +100°C (NBR).