7930 21 21 — Pneumatic Adjustable Non-Return Valves in Nickel-Plated Brass — Adjustable check valve female — 21mm, G1/2

Description

The 7930 21 21 is a Pneumatic Adjustable Non-Return Valves in Nickel-Plated Brass (Adjustable check valve female, 21mm, G1/2), supplied from UK stock by J&J Air Systems. It is rated to a maximum operating pressure of 12 bar and an operating temperature range of -20°C to 80°C.

Specification

• Part number: 7930 21 21
• Size / variant: Adjustable check valve female, 21mm, G1/2
• Maximum operating pressure: 12 bar
• Operating temperature: -20°C to 80°C
• Suitable for: Air
• Applications: Automotive Process, Chemical, Food Process, Machine Tools, Petrochemical, Printing, Textile
• Weight: 0.171 kg

Need technical advice, availability or volume pricing? Call 0800 0278 442 or email [email protected].

About this range

These nickel-plated brass adjustable non-return valves, suitable for harsh environments, allow compressed air to flow in one direction and prevent flow in the other.
This product incorporates precise adjustment of opening pressure for greater flexibility.
Features/Benefits:
– Robust
• Excellent resistance to abrasion and corrosion
• Developed for the food process industry
– Optimised Inventory Management
• A single valve for multiple opening pressure settings
• Limits the number of versions
• Flexibility of use
– Protection & Safety
• Maintains downstream pressure if upstream pressure drops
• Designed with locking nut to protect initial setting in the event of:
Vibration
Intensive use
Accidental handling
• Adjustment and locking of the non-return valve cracking pressure with two different Allen keys prevents the settings from being accidentally changed
• Smooth external profile to facilitate cleaning in situ
• Maximum constant flow guaranteed whatever the setting of the cracking pressure
Markets:
• Machine Tools
• Food and Beverage
• Printing and Marking Equipment
• Industrial Chemical Processing
• Wearing Apparel
• Vehicle Assembly Facilities
Applications:
• Pneumatic Circuits Protection
• Suitable for Compressed Air in Harsh Environments
Technologies:
• Function fitting
• Pneumatic system
• Pneumatic fittings
• Control valve
• Pressure regulating valve
• Pressure regulator valve
Technical Characteristics:
• Fluids: Compressed Air
• Materials: FDA chemical nickel-plated brass, NBR, brass, chemical nickel-plated brass, stainless steel, FKM, silicone-free
• Pressure: Vacuum to 12 bar
• Temperature: -20°C to +80°C
Regulations:
• DI: 2002/95/EC (RoHS)
• RG: External Components: 21CFR (FDA) (seal: § 177.2600, nickel: §184.1537, grease: NSF H1)
• RG: 1935/2004 (external surface flow = 0.02 litre per hour)
• DI: 2006/42/EC (external surface Ra