Watson McDaniel series R relief and back pressure regulating valve. 1/2" R-12-N-4, R-12-N-3, R-12-N-2, R-12-N-1. 3/4" R-13-N-4, R13-N-3, R-13-N-2, R-13-N-2, R-13-N-1. 1" R-14-N-4, R-14-N-3, R-14-N-2, R-14-N-1. 1-1/4" R-15-N-4, R-15-N-3, R-15-N-2, R-15-N-1. 1-1/2" R-16-N-4, R-16-N-3, R-16-N-2, R-16-N-1. 2" R-17-N-3, R-17-N-2, R-17-N-1. 3" R-19-N-3, R-19-N-2, R-19-N-1.

Watson McDaniel R Series Relief & Back Pressure Valve

  • $175.00
    Unit price per 

Only 8 left!

The Watson McDaniel series R relief & back pressure valve automatically maintains desired maximum pressure in a vessel or on a system by relieving excess pressure into a lower pressure system or to atmosphere. Typical applications include pump bypass control valves, or for protection against intermittent overpressure conditions on liquid systems. Usable on a variety of liquid systems, not usable on steam systems.  

We Also Recommend

Watson McDaniel TD600 series thermodynamic steam trap. 3/8" TD600-11-N, 1/2" TD600-12-N, 3/4" TD600-13-N, 1" TD600-14-N.

Watson McDaniel TD600 Series Thermodynamic Steam Trap

Regular price $169.00
Watson McDaniel TD600S series thermodynamic steam trap. 1/2" TD600S-12-N, TD600LS-12-N. 3/4" TD600S-13-N, TD600LS-13-N. 1" TD600S-14-N.

Watson McDaniel TD600S Series Thermodynamic Steam Trap With Integral Strainer

Regular price $282.00
Watson McDaniel TD600SB series thermodynamic steam trap with integral strainer and blowdown valve. 1/2" TD600SB-12-N, TD600LSB-12-N. 3/4" TD600SB-13-N, TD600LSB-13-N. 1" TD600LSB-14-N.

Watson McDaniel TD600SB Series Thermodynamic Steam Trap With Integral Strainer & Blowdown Valve

Regular price $353.00
Watson McDaniel TD700S Thermodynamic Steam Trap. 1/2" NPT TD700S-12-N, TD700HS-12-N, 1/2" SW TD700S-12-SW, TD700HS-12-SW. 3/4" NPT TD700S-13-N, TD700HS-13-N. 3/4" SW TD700S-13-SW, TD700HS-13-SW. 1" NPT TD700S-14-N, TD700HS-14-N. 1" SW TD700S-14-SW, TD700HS-14-SW.

Watson McDaniel TD700S Series Thermodynamic Steam Trap With Integral Strainer

Regular price $430.00
Watson McDaniel TD900S Thermodynamic Steam Trap. NPT, 1/2" TD900S-12-N, 3/4" TD900S-13-N, 1" TD900S-14-N. SW, 1/2" TD900S-12-SW, 3/4" TD900S-13-SW, 1" TD900S-14-SW. 600# Flanged, 1/2" TD900S-12-F600, 3/4" TD900S-13-F600, 1" TD900S-14-F600. High Pressure model, 1/2" TD900LS-12-N, TD900LS-12-SW, TD900LS-12-F600. 3/4" TD900LS-13-N, TD900LS-13-SW, TD900LS-13-F600. 1" TD900LS-14-N, TD900LS-14-SW, TD900LS-14-F600.

Watson McDaniel TD900S Series Thermodynamic Steam Trap With Integral Strainer

Regular price $908.00