Norgren S/521 Non Return Valve, 16 bar Inlet Female Threaded, Outlet Female Threaded G

RS Stock No.:: 722-570
Mfr. Part No.:: S/521
Brand:: Norgren

Norgren S/521 Non Return Valve, 16 bar Inlet Female Threaded, Outlet Female Threaded G

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Subtotal (1 unit)*

$127.08

(exc. GST)

$139.79

(inc. GST)

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In Stock

17 unit(s) ready to ship
Plus 33 unit(s) ready to ship from another location
Plus 32 unit(s) shipping from 19 May 2026

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Units	Per unit
1 - 11	$127.08
12 +	$125.56

*price indicative

RS Stock No.:: 722-570
Mfr. Part No.:: S/521
Brand:: Norgren

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Norgren
	Product Type	Non Return Valve
	Inlet Connection Type	Threaded
	Outlet Connection Type	Threaded
	Series	S/521
	Cracking Pressure	0.1bar
	Minimum Operating Pressure	0.3bar
	Inlet Port Gender	Female
	Outlet Port Gender	Female
	Minimum Operating Temperature	-20°C
	Material	Brass
	Maximum Operating Temperature	80°C
	Standards/Approvals	No
	Maximum Operating Pressure	16 bar
	Outlet Thread Standard	G

	Select all
	Brand Norgren
	Product Type Non Return Valve
	Inlet Connection Type Threaded
	Outlet Connection Type Threaded
	Series S/521
	Cracking Pressure 0.1bar
	Minimum Operating Pressure 0.3bar
	Inlet Port Gender Female
	Outlet Port Gender Female
	Minimum Operating Temperature -20°C
	Material Brass
	Maximum Operating Temperature 80°C
	Standards/Approvals No
	Maximum Operating Pressure 16 bar
	Outlet Thread Standard G

Datasheet

RoHS Status: Exempt

COO (Country of Origin):: CN

IMI Norgren Non-Return Valve, G1/4 Female Threaded Connections, 16 Bar Maximum Operating Pressure - S/521 Series

Use this non-return valve from IMI Norgren to allow the free flow of air inside your pneumatic system. Its brass body material helps resist temperature buildups to prevent overheating. The standard female G1/4 threaded inlet and outlet connections are easy to screw in place into your pneumatic system, and they'll stay fixed in place even under high-pressure use. This device is suitable for use with compressed air that's being filtered and operates when lubricated or non-lubricated.

Features & Benefits

• Supplied with nitrile rubber seals that ensure a tight fit and stop compressed air from escaping

• Single-directional use for a simplified setup

• Operating pressure range between 0.3 and 16 bar for versatile use with different systems

• Less than 0.1 bar cracking pressure for precise and sensitive operation

Applications

• Mechanised agricultural equipment

• Pharmaceutical industry

• Manufacturing lines

• Industrial automation

• Bottling conveyor systems

Can this non-return valve operate in harsh temperatures?

Yes, this non-return valve has an operating temperature range of -20°C to +80°C, so you can rely on it in extreme industrial conditions.