Regulator JSAV Overpressure Shut-off Valve

Use the JSAV to protect against high pressure for valves downstream from a gas regulator. The gas supply is shut off if the downstream pressure exceeds the spring setpoint of the over pressure shut-off valve. It is suitable for natural gas, clean coke oven gas, and LPG.

The VSBV is a safety relief valve that reduces temporary pressure surges caused by fluctuations in system operation downstream from the pressure reducing regulator. It is required for use with the Regulator JSAV Overpressure Shut-off Valve.

Features

• Senses excess pressure downstream from the pressure regulator
• Broad adjusting range for the response pressure
• Low pressure loss
• Vent pipe may not be required
• CE certified models available
• Requires use of VSBV safety relief valve

	Documentation Manufacturer's Product Brochure Manufacturer's Operating Instructions
	Ordering Information Model† Connection Pressure Test Point Max inlet pressure Price (US List) Order Now JSAV 25TN40-0 1" NPT internal thread No 60 psig (4 bar) $263 JSAV 40TN40-3 1½" NPT internal thread Screw at Inlet and Outlet 60 psig (4 bar) $445 JSAV 50TA40-0 2" ANSI flange No 60 psig (4 bar) $872 JSAV 80TA40-0 3" ANSI flange No 60 psig (4 bar) $1665 JSAV 100TA40-0 4" ANSI flange No 60 psig (4 bar) $1979 For all other configurations Contact Combustion 911 †All JSAV models are set at the factory to 1.7 psig (120 mbar). Springs Model Description Price (US List) Order Now JSAV 25/40 SPRING 01 Spring 7-24 " w.c. (18-60 mbar), black $10 JSAV 25/40 SPRING 02 Spring 20-32 " w.c. (50-80 mbar), orange $10 JSAV 25/40 SPRING 03 Spring 0.9-1.6 psi (60-110 mbar), red $14 JSAV 25/40 SPRING 04† Spring 1.5-3 psi (100-210 mbar), d-green $14 JSAV 25/40 SPRING 05 Spring 2.9-5.1 psi (200-350 mbar), yellow $19 JSAV 25/40 SPRING 06 Spring 4.1-7.3 psi (280-500 mbar), white $23 JSAV 50-100 SPRING 01 Spring 0.5-1 psi (35-70 mbar), l-blue $14 JSAV 50-100 SPRING 02† Spring 0.9-2.5 psi (60-170 mbar), red/brown $20 JSAV 50-100 SPRING 03 Spring 1.7-3.2 psi (120-220 mbar), violet $20 JSAV 50-100 SPRING 04 Spring 2.8-5.8 psi (190-400 mbar), orange/yellow $26 JSAV 50-100 SPRING 05 Spring 4.4-8 psi (300-550 mbar), orange/green $27 For all other parts Contact Combustion 911 †Comes standard with purchase of corresponding JSAV model.
	Applications Click on images for close-up view. Gas pressure regulating systems should be assembled with a safety over pressure slam shut off valve (JSAV) 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 8.0 psig (18 to 550 mbar) Factory setting: 1.7 psig (110 mbar) Type of Gas: natural gas, clean coke oven gas, and LPG     Mechanical Data Available pipe sizes: NPT-threaded: 1", 1½" ANSI flange: 2", 3", 4"     Contruction 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 JSAV 25/40 7.5-24" WC 20-32" WC 0.9-1.6 psi* 1.5-3.0 psi 2.9-5.1 psi 4.1-7.3 psi 18-60 mbar 50-80 mbar 60-110 mbar* 100-210 mbar 200-350 mbar 280-500 mbar black orange red* dark green yellow white JSAV 50/80/100 0.5-1 psi 0.9-2.5 psi* 1.7-3.2 psi 2.8-5.8 psi 4.4-8.0 psi 35-70 mbar 60-170 mbar* 120-220 mbar 190-400 mbar 300-550 mbar light blue red/brown* purple orange/yellow orange/green *standard spring

JSAV 25

JSAV 40