WattsLFMMVM1Manual

Febco model 825 is a reduced pressure backflow assembly. The model 825 was produced from approximately 1975 to 1988. The 1 1/2" and 2" sizes were discontinued in 1978 and the body was made of bronze. The 2 1/2"-10" check valve body was made of cast iron construction with a painted epoxy coating to inhibit rust. The first few years this valve was produced with some internal parts constructed out of aluminum causing premature and serious erosion. These parts were redesigned to avoid this problem. The check valves use the 805Y design of construction. The 2 1/2"-3" have an uncontained check spring. The 4"-10" have a contained check spring. Some versions of the contained spring check assembly required the spring tension to be released to change the rubber check discs. A spring removal tool is suggested to release the spring tension. Check seats were replaceable and a seat removal tool was needed to replace the seats. The 825D series was built from 1988-1989. The check valve utilizes the 805YD design of construction. The 2 1/2"-3" have uncontained check springs. The 4"-10" have a contained check spring design. The changes were that the body was made of ductile iron instead of cast iron and internal check parts are stainless steel instead of epoxy painted iron or bronze. The check bodies on 2 1/2"-10" were painted epoxy coated. In 1991 it was changed to a fused epoxy coating. The check seats are bronze and replaceable. In the 825D the check seats are bolted in and a special tool is not needed to replace the seat. The relief valve on both models was the same; it is a side mounted relief valve assembly that attaches by a special bushing to the body and can be removed from the check body. The relief valve utilizes an external relief valve sensing line. Most repair parts are the same for the 825 and the 825D models.

lfmmvm1-ut

Series LFMMV Thermostatic Mixing Valves maintain and limit mixed hot water to a desired, selectable temperature. The LFMMV series can be set to any temperature between 80 deg F and 120 deg F with flow rates as low as 0.5 gpm and as high as 12 gpm (refer to capacity chart on back). This mixing valve series is listed under ASSE 1017 for valves used in hot water source applications, ASSE 1069 for single-pipe, tempered water applications and ASSE 1070 for valves used in individual or multiple fixture applications and also listed IAPMO cUPC. The LFMMVs feature Lead Free* construction to comply with Lead Free* installation requirements. The LFMMV-M1 uses a double throttling design to control both the hot and cold water supply to the mixed outlet. The superior flow characteristics of this valve provide accurate temperature control (+/-3 deg F) with low pressure drop across the rated flow range. As an added feature, the LFMMV-M1 series incorporates integral inlet filter washers and check valves in both the hot and cold water inlets to protect against cross flow. The LFMMV-M1 is available with either union thread (-UT), union solder (-US), CPVC (-CPVC ) Quick-Connect (-QC) or PEX (-PEX) end connectors. Maximum Pressure: 150psi (10.55 bar).

WATTS® Thermostatic Mixing Valve, Series: LFMMVM1-QC, 1/2 in Nominal, Union Quick-Connect, 150 psi, 200 deg F, 0.5 to 20 gpm Flow, Cast Copper Silicon Alloy Body, Buna-N®/EPDM O-Ring, 6-5/8 in W x 6-1/4 in, Domestic

WATTS® 0559164 LFMMVM1-QC Thermostatic Mixing Valve, 1/2 in Nominal, Union Quick-Connect End Style, 150 psi Pressure, 0.5 to 20 gpm Flow, Cast Copper Silicon Alloy Body, Domestic