Diaphragm valve QFF series

manualshut-offselector

Product overview
Designed as an opening and closing device for filling and emptying gas steel cylinders. Applicable medium: non-toxic, non-flammable, non-strongly oxidizing gas mixtures. Intended for refillable mobile gas cylinders with an ambient temperature range of -40℃ to +60℃ and nominal pressure 0.1–15 MPa.

Key features

• Membrane type: excellent sealing performance and long service life.

Operation

• Unscrew the protective threaded cap before use.
• With the valve upright: connect the lower inlet thread to the gas cylinder; connect the side outlet thread to the consumer.
• Turn the handle to the right = close; to the left = open. Direction can be verified by the arrow on the handle sleeve.

Dimensions / Notes
External dimensions are shown in the drawing.
Weight: 0.57 kg

Selection guide
Selection notes are shown in a drawing to assist model selection.

Technical specifications

• Type: Membrane type
• Application: Opening/closing for filling and emptying gas steel cylinders
• Applicable medium: Non-toxic, non-flammable, non-strongly oxidizing gas mixtures
• Temperature range: -40℃ to +60℃
• Nominal pressure: 0.1–15 MPa
• Weight: 0.57 kg
• Connections: lower inlet thread (to gas cylinder), side outlet thread (to consumer)
• Operation direction: Right turn = close, Left turn = open