Overview of Primary Product
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 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, a Flow Metering Valve, and now it is field
convertible from a straight pattern to a 90 degree right angle
pattern. In addition, the “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 “Plus Two”
Multi-Purpose valves are made of Ductile Iron with stainless
steel to provide years of trouble free service. Each valve is
available in *150# psi or *250# psi working pressure with
flanged end connections (1-1/2”, 2” and 2-1/2” units are
threaded connections). Grooved adapters are now
available for purchase to fit your design needs.
*Consult Pressure/Temperature Ratings Chart
Pressure-Temperature Ratings
• Horizontal or Vertical Installation
• Field Convertible to a Right Angle Valve
• Stem Seal Packing Replaceable Under Pressure
• Five (5) Valves in One:
- Shut O 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 and 250 psi
Working Pressure
Materials of Construction
Body: ..................................Ductile Iron
Seat Disc: .........................Stainless Steel (304)
Spring: ...............................Stainless Steel (302)
Gland: ................................Bronze
Stem Packing: ............... Asbestos Free Teon
................................................Impregnated Aramid Fiber
Seat: ....................................EPDM
Body “O” Ring: ..............EPDM
Stem: ..................................Bronze/Stainless Steel (416)
Grooved Adapter: ......Steel
350
300
250
200
150
100
0 50 100 150 200 250 300
TEMPERATURE (˚F)
MAXIMUM TO
TAL WORKING
PRESSURE (PSI)
Class 250# in accordance with ANSI Standard B16.1
Class 125# in accordance with ANSI Standard B16.1
Features