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Kromschroder Products >> Industrial Gas Valves >> Safety Relief Valves >> VSBV >> VSBV 25TN40-0

Safety Relief Valve VSBV 25TN40-0

Price: Contact Us

This item is not available for order online

Safety relief valve for relieving brief pressure surges in control systems preventing the safety shut-off valve JSAV from being activated unintentionally.
Gas types: natural gas, town gas, landfill gas, LPG (gaseous) and biologically produced methane (max. 0.02 %-by-vol. H₂S)
1″ NPT internal thread connection
Maximum inlet pressure: 60 psig (4 bar)
Opening pressure range adjustable 8" WC to 8.0 psig / 20–500 mbar
Free of nonferrous metal
CE certified models available
Required for use with Regulator JSAV Overpressure Shut-off valve

Learn More:
Documentation
Accessories
Applications
Specifications

Documentation

	FAQ: Kromschröder Product Labels and Type Codes (Blog Post)
	Safety Relief Valve VSBV Brochure
	Safety Relief Valve VSBV Operating Instructions
	Safety Relief Valve VSBV Technical Information

Accessories

Model and Description	Price	Cart
VSBV SPRING 01 Spring 8-16 " w.c. (20-40 mbar), red	Contact Us	Not available for online purchase.
VSBV SPRING 02 Spring 14-20 " w.c. (35-50 mbar), yellow	Contact Us	Not available for online purchase.
VSBV SPRING 03 Spring 18-30 " w.c. (45-75 mbar), green	Contact Us	Not available for online purchase.
VSBV SPRING 04^† Spring 1-2.5 psi (70-170 mbar), blue	Contact Us	Not available for online purchase.
VSBV SPRING 05 Spring 2.5-4.8 psi (165-330 mbar), black	Contact Us	Not available for online purchase.
VSBV SPRING 06 Spring 4.7-7.2 psi (320-500 mbar), white	Contact Us	Not available for online purchase.

^†Comes standard with the purchase of the VSBV valve.

Applications

Click on images for close-up view.

Gas pressure regulating systems should be assembled with a Regulator JSAV safety over pressure slam shut off valve upstream of the regulator and safety relief valve VSBV. These safety valves are not required if the highest possible operating pressure of the regulator does not exceed the maximum permissible operating pressure of all devices connected downstream of the regulator.

Specifications

Operating Limits

Ambient temperature range:

5° F to 140° F (-15° C to 60° C)

Maximum inlet pressure:

60 psig (4 bar)

Response Pressure:

8" WC to 7.0 psig (20 to 500 mbar)

Factory setting:

1.43 psig (100 mbar)

Type of Gas:

natural gas, clean coke oven gas, and LPG

Mechanical Data

Available pipe sizes:

NPT-threaded: 1″

Construction Materials

Housing:

JSAV and VSBV regulators have pressure die-cast aluminium alloy bodies and diaphragm housings. Diaphragms are nitrile
rubber, and valve discs have vulcanized nitrile rubber seals. Valve stems and valve discs are aluminum.

Opening Pressure Range

Type	Opening Pressure Range		Color
VSBV	8-16″ WC 14-20" WC 18-30" WC 1.0-2.5 psi* 2.5-4.8 psi 4.7-7.2 psi	20-40 mbar 35-50 mbar 45-75 mbar 70-170 mbar* 165-330 mbar 320-500 mbar	red yellow green blue* black white