Brochure

30
EXCESS FLOW VALVES
The Safety+PLUS
®
excess flow valve helps protect against gas fires and explosions due to line ruptures or
disconnects at the appliance. In either event, the Safety+PLUS
®
valve immediately restricts gas flow to a
non-hazardous level (bypass) to help avert the potential for a dangerous release of gas into the home.
Gas flow is controlled only at the appliance where the problem occurred; the rest of the home’s system continues to
function. Only after the gas line is properly repaired, the valve’s bypass flow automatically pressurizes the gas line
to reset the valve and restore gas flow to the appliance.
• Automatic Valve Activation
• Automatic Reset
• Easy to Install
• 100% Performance Tested
Appliance Excess Flow Valves
®
Part No. Inlet Outlet
Flow Capacity .5"
water column (W.C.)
(BTU/HR)
Maximum Flow
Capacity (BTU/HR)
Rated Trip Flow
Rate (BTU/HR)
Maximum
Bypass Rate
(SCFH)
3/8 " OD Flare (Series 1540) - Low to Moderate Demand Appliances
RU2-6-8 1/2
" MIP 3/8 " OD Flare 60,500 67,500 70,000 2.5
RU4-6-8 3/8
" Female Flare (1/2 " MIP) 3/8 " OD Flare 60,500 67,500 70,000 2.5
1/2
" OD Flare (Series 1540) - Low to Moderate Demand Appliances
RU2-8L 1/2
" MIP 1/2 " OD Flare 60,500 67,500 70,000 2.5
RU4-8L 3/8
" Female Flare (1/2 " MIP) 1/2 " OD Flare 60,500 67,500 70,000 2.5
RU4-8-12L 1/2
" Female Flare (3/4 " MIP) 1/2 " OD Flare 60,500 67,500 70,000 2.5
1/2
" OD Flare (Series 1550) - Moderate to Large Demand Appliances
RU2-8 1/2
" MIP 1/2 " OD Flare 102,000 118,000 135,000 2.5
5/8
" OD Flare [15/16-16 Thread] (Series 1550) - Moderate to Large Demand Appliances
MRU1-10-12L 3/4
" FIP 5/8 " OD Flare 102,000 118,000 135,000 2.5
MRU2-10-12L 3/4
" MIP (tapped 1/2 " FIP) 5/8 " OD Flare 102,000 118,000 135,000 2.5
MRU5-10L 5/8
" Female Flare 5/8 " OD Flare 102,000 118,000 135,000 2.5
5/8 " OD Flare [15/16-16 Thread] (Series 1560) - Large Demand Appliances
MRU1-10-12 3/4
" FIP 5/8 " OD Flare 110,000 165,000 186,000 2.5
MRU2-10-8 1/2
" MIP 5/8 " OD Flare 110,000 165,000 186,000 2.5
MRU2-10-12 3/4
" MIP (tapped 1/2 " FIP) 5/8 " OD Flare 110,000 165,000 186,000 2.5
MRU5-10 5/8
" Female Flare 5/8 " OD Flare 110,000 165,000 186,000 2.5
CHART 1 It is important to properly size the Safety+PLUS valve for the appliance application and piping system. Read all installation instructions contained within this brochure for complete sizing requirements.
NOTE: All Safety+PLUS
®
valves require a minimum inlet pressure of .5" W.C. and are rated at a maximum inlet pressure of 1/2" psig. All Safety+PLUS
®
valves have a maximum 2.5 SCFH bypass ow rate.
Flow rates given are for 0.6 specic gravity natural gas with an average heating value of 1,000 Btu per cubic foot; therefore, 1 kBth/h is equal to 1 SCFH (standard cubic foot per hour). Chart to be used in
accordance with the local plumbing codes and with reference to NFPA 54/ANSI Z223.1 - National Fuel Gas Code
EXCESS FLOW VALVES