Watts ETSX - Manual

For Heating and Cooling Systems
ES-ETX/ETSX
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor –––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. –––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
ETSX
Series ETX, ETSX
Pressurized Expansion Tanks for
Heating and Cooling Systems*
Series ETX and ETSX Pressurized Expansion Tanks for
Heating and Cooling Systems are designed to absorb the
increased volume of water created when water is heated.
These tanks maintain system pressure below the relief set-
ting of the relief valve. The Series ETX and ETSX’s pre-pres-
surized steel tank features a durable expansion membrane
that prevents contact of the water with the air in the tank.
This rugged diaphragm minimizes loss of the air change and
ensures long and trouble-free life for the system.
Features
• Precharged at 12psi (83 kPa)
• Rugged flexible butyl diaphragm
• In-line and free standing models
• Compatible with glycol in systems
• Steel construction
Models
ETX Mounts to supply piping
ETSX Free standing
Specifications
Furnish and install as shown on plans a Watts Model
ETX/ETSX _____ gallon _____ “ diameter x ____ “ (high) pre-
charged steel expansion tank with a fixed butyl bladder. The
tank shall have an NPT system connection and a .302”-32
charging valve connection (standard tire valve) to facilitate the
on-site charging of the tank to meet system requirements. The
tank shall be factory precharged to 12psi. The tank shall be a
Watts Regulator Company Series ETX or ETSX.
Ratings
Maximum Working Temperature: 220˚F (104ºC)
Maximum Working Pressure:
ETX-15, ETX-30, ETX-60: 75psi (517 kPa)
ETX-90 and ETSX Series: 100psi (6.9 bar)
Precharge (field adjustable): 12psi (83 kPa)
*Not for use on potable water systems.
Materials
Diaphragm: Butyl rubber
Outer Shell: Carbon Steel with Epoxy finish
ETX
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.