Festo GRLA-1/8-QS-6-RS-B 162965 One‑way Flow Control Valve G1/8 to 6mm

Festo GRLA‑1/8‑QS‑6‑RS‑B is a one‑way flow control valve with non‑return function for pneumatic systems. Regulates piston speed in double‑acting or single‑acting cylinders by restricting exhaust air flow in one direction while allowing free flow in the opposite direction. Knurled rotary knob with detent provides tool‑free adjustment. G1/8 male thread on one side, QS‑6 push‑in connector for 6 mm OD tubing on the other.

Applications:

• Pneumatic cylinder speed regulation (meter‑out, exhaust air)

• Flow control in factory automation, packaging and material handling

• Assembly lines, pick‑and‑place systems, and general machine building

• OEM equipment requiring compact one‑way flow control

Core Specifications:

• Part number: 162965

• Valve function: Exhaust air one‑way flow control with non‑return function

• Pneumatic connection, port 1: QS‑6 (push‑in fitting for 6 mm OD tubing)

• Pneumatic connection, port 2: G1/8 male thread (BSPP)

• Adjustment component: Rotary knob with detent (knurled screw)

• Standard nominal flow rate (flow control direction): 165 l/min (at 6 bar)

• Standard nominal flow rate (non‑return direction): 160–240 l/min (at 6 bar)

• Operating pressure range: 0.2 bar to 10 bar

• Ambient / media temperature: –10 °C to +60 °C

• Operating medium: Compressed air (ISO 8573‑1:2010 [7:4:4])

• Material, housing: PBT

• Material, release ring: POM (blue)

• Material, seals: NBR, HNBR

• Material, hexagonal bolt: Wrought aluminium alloy, anodised

• Material, threaded plug: Brass, nickel‑plated

• Corrosion resistance class (CRC): 2 – moderate corrosion stress

• Mounting position: optional

• Swivel mounting: 360° rotatable after threading (no continuous swivelling)

• Tube size: for tubing OD 6 mm

• Width across flats: 13 mm

• Product weight: approx. 9.5 g

• Packaging unit: 1 piece

• RoHS compliant

Advanced Specifications:

• LABS (PWIS) conformity: VDMA24364‑B1/B2‑L

• Cleanroom suitability: Class 4 according to ISO 14644‑1

• Explosion protection: ATEX Zone 1, 2, 21, 22 (certificate required)

• Standard flow rate (flow control direction, 6→0 bar): 280 l/min

• Standard flow rate (non‑return direction, 6→0 bar): 300–360 l/min

• Nominal tightening torque: 5 Nm (±20%)

• Max. tightening torque: 6 Nm

System Integration:

• Designed for direct cylinder port mounting or inline installation in pneumatic systems.

• The G1/8 male thread screws directly into a cylinder or a valve port.

• The QS‑6 push‑in fitting accepts 6 mm OD nylon, polyurethane, or PTFE tubing (PUN, PAN, PEN series).

• For reliable speed regulation, install in the exhaust air circuit (meter‑out) to back‑pressure the cylinder.

• After mounting, the valve body can be swivelled up to 360° to orient the push‑in port flexibly.

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products:

• GRLA‑1/8‑QS‑6‑RS‑D (197581): Slotted head screw adjustment, different flow characteristic

• GRLA‑1/4‑QS‑8‑RS‑B: Larger thread (G1/4) and tubing (8 mm) for higher flow

• QS‑6 tubing: 6 mm OD polyurethane or nylon tubing for the push‑in port

• GRLA‑1/8‑QS‑6‑D (193144): Slotted head screw adjustment without locking