Product Overview

Pressure Loss Curve (Curves represent valve fully open)
FLOW IN LITERS PER SECOND (L/S)
FLOW IN GALLONS PER MINUTE (GPM)
PRESSURE DROP IN FEET PRESSURE DROP IN METERS
Design
The new Taco “Plus Two” Multi-Purpose Valve combines all the valve
functions that are normally required on the discharge side of a
centrifugal pump in a hydronic heating or cooling system into one body.
It is a Shut-Off Valve, a Non-Slam Check Valve, a Balancing Valve, and
a Flow Metering Valve, and now it is field convertible from a straight
pattern to a 90 degree right angle pattern. In addition the new “Plus
Two” Multi-Purpose Valves have low pressure drops, equal to or better
than any valve on the market today, and the stem seal packing can be
replaced under full system pressure.
With sizes ranging from 1-1/2” through 14” the new “Plus Two” Multi-
Purpose valves are made of Ductile Iron with stainless steel and bronze
fitted construction to provide years of trouble free service. Each valve
is available in *150# psi working pressure with flanged or grooved end
connections or *250# psi working pressure with flanged or grooved
end connections (1-1/2”, 2” and 2-1/2” units are threaded connections).
*Consult Pressure/Temperature Ratings Chart
Pressure-Temperature Ratings
Features
฀Horizontal or Vertical Installation
฀Field Convertible to a Right Angle Valve
฀Stem Seal Packing Replaceable Under Pressure
฀Bronze Fitted Construction
฀ ฀Five (5) Valves in One:
- Shut Off Valve
- Flow Control Valve (Globe Style)
- Non Slam Check Valve
- Flow Metering Valve
- Straight Pattern Valve can be Converted
to a Right Angle Pattern Valve
฀Memory Indicator, Pointer & Scale
฀Schrader Valve Metering Connections
฀“O” Ring Sealed Valve Body
฀Replaceable “Soft Seat”
฀฀ Low Pressure Drop (Equal to or Better than any
Comparable Valve on the Market Today)
฀Available in 125 psi Working Pressure (Flanged or Grooved
End Connections) and 250 psi Working Pressure (Flanged or
Grooved End Connections)
Materials of Construction
Body: Ductile Iron
Seat Disc: Bronze
Spring: Stainless Steel (302)
Gland: Bronze
Stem Packing: Asbestos Free Teflon Impregnated Aramid Fiber
Seat: EPDM
Body “O” Ring: EPDM
Stem: Bronze/Stainless Steel (416)
350
300
250
200
150
100
0 50 100 150 200 250 300
TEMPERATURE (˚F)
MAXIMUM TOTAL WORKING
PRESSURE (PSI)
Class 250# in accordance with ANSI Standard B16.1
Class 125# in accordance with ANSI Standard B16.1