1 1/2″ LARGE BRASS MANIFOLDS FOR 5/8″ & 3/4″ PEX & PEX-AL-PEX TUBING, 2–12 LOOPS

MrPEX 1 ½” Brass Manifold is made from high quality alloy extruded and chrome plated after machining, and is offered in 2 through 12 loop configurations. The manifold comes mounted on brackets and it is equipped with high flow ball valves provided with thermometers, manual air vents and fill/drain valves. The SUPPLY (upper) manifold is fitted with balancing flowmeters with readable range of 0 to 2 GPM that allow flow adjustment of each individual loop. The flow meters have a brass body and the sight glass is made from temperature and impact resistant plastic material, all components are anti-freeze resistant up to a 50% mix. The RETURN (lower) manifold, has manual on/off valves that controls the flow for each individual circuit. The manual knob can be removed to accommodate the MrPEX actuators (part# 5120700 & 5120701). Supply and return mains can be connected from either left or right sides. The manifold comes ready for a left-hand connection. Connection from the right can be done by removing the manifold body from the brackets and flipping them over.

Technical Data
Manifold Body Material ASTM B124 C37700 (CW612N EN12168)
Brass Components Material ASTM B124 C37700 (CW614N and CW617N)
Operating Pressure 87 psi
Maximum pressure (at 70 degrees F) 145 psi
Maximum continuous working temperature 160 degrees F
Maximum intermittent working temperature 185 degrees F (maximum 10 minutes/day)
Maximum differential pressure 14.5 psi
Fluids Allowed Water/Up to 50% Propylene glycol
Flow indication scale 0 to 2 GPM (precision plus/minus 10%)
Thermometer scale 32 to 175 degrees F
Supply Balancing Flowmeter (wide open) Cv 1.39
Return Interception Valve (wide open) Cv 3.24
Manifold Union G1-1/4″ Female Swivel Nut Flat Seat
Ball valve connection 1-1/4″ NPT Female x G1-14″ Male Flat Seat
Loop connections G1″ Eurocone (EK25)
Fill and Drain valve connections 3/4″ GHT
Actuator adapter connection M30x1.5
Manifold Dimensions (L)
Part # 3320200  3320300  3320400  3320500  3320600
Length L 10.2″ 12.2″ 14.2″ 16.1″ 18.1″
Manifold Dimensions (L, continued)
Part #  3320700  3320800  3320900  3321000  3321100  3321200
Length L 20.1″ 22.0″ 24.0″ 26.0″ 28.0″ 29.9″

MrPEX® 1 1/2” Brass FOR 5/8” AND 3/4” PEX AND PEX‐AL‐PEX TUBING, 2‐12 LOOPS

MrPEX® 1 1/2″ Large Brass Manifolds are made from high‐quality extruded brass and offered in 2–10 loop fully assembled manifolds. The supply body has balancing valves with adjustable flow‐meters for flows up to 2 gpm per loop. The return body is equipped with on/off valves. The return balancing valve disc is designed to enable exact adjustments of small flows while s􀀂ll being able to handle large flow with minimal resistance. The branch Cv value is 1.3 and the manifold body accommodates flows up to 20 gpm. Manifolds are mounted on brackets ready to mount. Inlets comes with a 1 1/4″ female NPT union ball valve and end caps feature vent and fill/drain. The branches have EK 25 (Eurokonus) connection.

Technical Data
Material Brass
Working Temperature 41 degrees to 158 degrees F
Max Working Pressure 87 psi
Branch Cv 1.3 Cv
Accepted Media Water, up to 50% propylene glycol
Loop Connection EK25 (G1″ Eurocone)
Available sizes 2-12 loops
Manifold Dimensions
Part # Type A B C D E F G H I
3320200 2 Loop 8.25″ 12.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″
3320300 3 Loop 8.25″ 14.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″
3320400 4 Loop 8.25″ 16.4″ 13″ 2″ EK25 1 1/4″ FIP” 4.5″ 2.87″ 1.68″
3320500 5 Loop 8.25″ 18.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″
3320600 6 Loop 8.25″ 20.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″
3320700 7 Loop 8.25″ 22.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″
3320800 8 Loop 8.25″ 24.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″
3320900 9 Loop 8.25″ 26.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″
3321000 10 Loop 8.25″ 28.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″
3321100 11 Loop 8.25″ 30.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″
3321200 12 Loop 8.25″ 32.4″ 13″ 2″ EK25 1 1/4″ FIP 4.5″ 2.87″ 1.68″