SV SL Series Pilot Operated Check Valve | SL10 SL20 SL32 SL-G01 | Decompression Type

SV & SL Series Pilot Operated Check Valves (with Decompression)

Product Overview: The SV and SL Series Pilot Operated Check Valves are high-performance components designed for precise position locking and reliable pressure holding of hydraulic actuators. Utilizing a subplate mounting design that complies with international standards, these valves allow free flow in one direction and absolute shut-off in the reverse. The reverse flow is triggered only when a pilot pressure signal is applied to force the poppet open.

This category features industrial sizes including SL10 (Size 10), SL20 (Size 20), and SL32 (Size 32), alongside the Yuken-type SL-G01 series. We highlight models with decompression features (e.g., SL10-PA2-42), which significantly reduce hydraulic shock during high-pressure opening. These are the premier choice for hydraulic presses, injection molding machines, large-scale HPU systems, and lifting load-holding circuits.

Key Technical Advantages:

• Pre-Decompression Feature: Models with the “P” designation include a decompression poppet that relieves high pressure in the actuator before the main spool opens, ensuring smooth, shock-free operation.

• Zero-Leakage Integrity: Hardened precision-ground seats and poppets guarantee zero internal leakage during long-term pressure holding, effectively eliminating cylinder drift.

• High Flow Capacity: Supporting sizes up to Size 32, these valves meet the stringent requirements of large-scale hydraulic systems for high flow rates and low pressure drops.

• Universal Compatibility: Designed according to ISO 4401 standards, ensuring direct interchangeability with major international brands for simplified system maintenance.

Detailed Specifications & Parameters:

• Core Series: SV & SL Series Pilot Operated Check Valves.

• Featured Model Matrix: SL-G01-E3X-GR-D2-31, SL10-PA2-42, SL20-PA2-42, SL10-PB, SL20-PB, SL32-PA.

• Core Performance Specs:

  • Nominal Sizes: Size 10 (NG10), Size 20 (NG20), Size 32 (NG32).

  • Max Operating Pressure: Rated up to 31.5 MPa (315 Bar / 4,500 PSI).

  • Cracking Pressure: Available with multiple spring options for standard or low-pressure opening.

  • Pilot Ratio: Optimized ratios designed to match various load feedback environments.

  • Solenoid Voltage (for electro-hydraulic types): D2 (DC 24V), etc.