Bellow low pressure regulator - S20

Bellow low pressure regulator acetylene version

S20 second stage line pressure regulator or point of use regulator is designed for specialty gas applications requiring very precise repeatability and a high precision of outlet pressure.

Key advantages

Bellow technology permits a large range of accurate outlet pressures in a compact design
Flexible mounting options on wall or panel
Acetylene version available (AD)

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Specifications

Female ports	G3/8 or 1/4 NPT (inlet/outlet)
Seat seal	EPDM
O-ring	EPDM
Bellow	Bronze or AISI 316L (SS version)
Weight	+/- 0,5 kg
Leak rate	10-8 M bar l/s
Gauges	Low pressure (M10 x 1 or 1/4 NPT)
Oxygen use	inlet pressure ≤ 30 bar max. for brass and stainless steel, AD: No
Nominal flow	2/2,5/3,5 Nm³/h AD: 1,5 Nm³/h
Temperature range	20°C to +60°C -4°F to +140°F
Outlet Pressure	1/3/10 bar 14.5/44/145 psi AD: 1.5 bar/ 21.75 psi
Inlet pressure	50 bar/725 psi AD: 20 bar/290 psi

Dimensional drawings

Product Configurator

	Body material		Outlet Pressure	End connections	O-ring material	Gauges	Mounting	Ports configuration
S	L	20	1	G	EPDM	1	FR0	A
	Chrome plated brass L Stainless steel I		1 bar 1 3 bar 3 10 bar 10	G3/8 - G3/8 G 1/4 NPT - 1/4 NPT N	EPDM EPDM	With 1	Without fixing ring FR0 With fixing ring FR1	Standard configuration A Reverse inlet/outlet R

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Pressure Regulators Catalog

Last update: May 26, 2025
Available in: en/FR