Imperial - 1173WR Control Valve- Nat, W/R. WHITE RODGERS CONTROL VALVE, NAT, 3/4", MILLIVOLT 1/4"CC PILOT FITTING ON SIDE. FOR LP ALSO ORDER # 51-1276 LP CONVERSION SPRING. ABOUT JAN 2010 IMPERIAL IS USING HONEYWELL VALVE OUR # 54-1167 IMPERIAL IS USING W/R & ROBERTSHAW VALVE USING THE SAME PART NUMBER. IF YOU WANT THE RSW VALVE USE # 54-1011 FOR NAT. AND # 54-1010 FOR LP. IMPERIAL FRYER IFR, IFS