H-QS-10 Festo Check Valve

RM 195.00

Pneumatic non-return valve with QS-10 push-in ports. Features a 1480 l/min nominal flow rate, -1 to 10 bar pressure range, and anodized aluminum housing.

SKU Festo-153465 Category
Check valves

H-QS-10 Festo Check Valve

Model Identifier H-QS-10
Official Part Number 153465
GTIN Standard 4052568011420

Technical Overview

The Festo H-QS-10 is a high-performance check valve featuring a non-return function and designed for in-line installation within pneumatic systems. Constructed with an anodised aluminium housing for durability, this valve supports a wide operating pressure range from -1 bar to 10 bar and provides a high standard nominal flow rate of 1480 l/min using QS-10 push-in connections.

Key Features

  • Non-return function
  • In-line installation type
  • Anodised aluminium housing
  • Push-in QS-10 connections for both ports
  • RoHS-compliant materials
  • Suitable for lubricated operation
  • Silver housing colour

High standard nominal flow rate of 1480 l/min for efficient pneumatic throughput.

Technical Specification Matrix

ParameterValue
Valve functionNon-return function
Pneumatic connection, port 1QS-10
Pneumatic connection, port 2QS-10
Type of mountingIn-line installation
Standard nominal flow rate (standardised to DIN 1343)1480 l/min
Operating pressure-1 bar ... 10 bar
Ambient temperature0 °C ... 60 °C
Material housingAnodised aluminium
Housing colourSilver
Operating mediumCompressed air to ISO 8573-1:2010 [7:-:-]
Symbol00991455
Min. diff. pressure, opening0.1 bar
Min. diff. pressure, closing0.2 bar
Note on operating and pilot mediumLubricated operation possible (in which case lubricated operation will always be required)
LABS (PWIS) conformityVDMA24364-B1/B2-L
Product weight63 g
Note on materialsRoHS-compliant

Industrial Applications

1. Vacuum Retention for Robotic Glass Handling

Integration into the vacuum circuit of a robotic manipulator used for lifting heavy glass panes or smooth panels. The valve is installed inline between the vacuum generator and the suction cups.

Problem Solved

Prevents dropped loads during power failures or hose ruptures. If the vacuum generator stops, the valve instantly closes (0.2 bar closing pressure differential), trapping the vacuum at the suction cup and keeping the heavy load suspended safely.

Vacuum safety-1 bar operating pressureQS-10 push-in fittingPassive load holding1480 l/min suction flow

2. Local Air Reservoir Isolation for Critical Clamping

Used at the inlet of a local air receiver tank dedicated to safety-critical pneumatic clamps on a machining fixture. The valve permits air to fill the tank but blocks reverse flow.

Problem Solved

Eliminates clamping failure caused by fluctuations in the main plant air supply. By isolating the local reservoir, the system maintains holding force (up to 10 bar) even if the upstream supply pressure dips or is disconnected.

Pressure isolationDecentralized air preparation0.1 bar opening pressurePneumatic clamping safetyReservoir protection

3. Backflow Prevention in Liquid Aeration Systems

Installed on the compressed air supply line feeding into a liquid mixing tank or sparging lance used in chemical processing or water treatment.

Problem Solved

Protects upstream pneumatic components from liquid contamination. If the air supply pressure drops below the hydrostatic pressure of the tank, the valve prevents corrosive or dirty liquid from flowing back into the clean air lines and damaging regulators or valves.

Backflow preventionAnodised aluminium housingProcess automationUnidirectional flow controlFluid contamination protection

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