1/2" Watson McDaniel WT3003S-12-SW Thermostatic Steam Trap (Repairable), 5/16" Orifice, Internal Strainer, Stainless Steel, Socket Weld

Watson McDaniel WT3000 Series, WT3003S-12-SW Thermostatic Steam Trap With Internal Strainer (Repairable)

Features:

• The thermal element and seat can be easily removed and replaced in minutes with the trap body still in-line.
• Operates at steam pressures up to 650 PSIG.
• Thermostatic traps are excellent at discharging air, which allows steam to enter quickly; extremely important during start-up.
• Welded stainless steel thermal element resists shock from water hammer.
• Freeze-proof when trap is installed in a vertical orientation allowing for complete condensate drainage.
• Body is produced from stainless steel investment casting.
• Hardened stainless steel seat for extended service life.
• Available with integral strainer and blowdown valve.

Options & Features (See Specification Sheet For Full List):

WT3000* Thermostatic Steam Trap (Repairable)

PROCESS: The WT3000* thermostatic steam trap is used for industrial process applications. Their compact size, all stainless steel construction, excellent air handling capability and wide operating pressure range make them a great choice for most process applications. Thermostatic traps are far superior to bucket traps and thermodynamic disc traps in their ability to remove air from the system.

* WT3001 refer to 5/16" orifice size, WT3003 refer to 5/16" orifice size.

DRIP, TRACING, PROCESS: The WT3000 is a general purpose medium capacity thermostatic trap that can be used for steam tracing; as a drip trap on steam mains and steam supply lines; as well as for process applications. All internal working components can be replaced while the trap body remains in-line. Thermostatic traps are small, light weight, operate over a wide pressure range, and have excellent air handling capabilities. Discharging air at start-up allows steam to quickly enter the system. All stainless steel construction and integral strainer option make the WT3000 an excellent choice for a variety of applications. Contains an extremely strong and rugged precision welded Stainless Steel thermal element which is highly resistant to water hammer.

How It Works

This thermostatic trap contains a welded stainless steel thermal element that expands when heated and contracts when cooled to 5°F below saturated steam temperature. When air or sub-cooled condensate are present, the trap is in the open discharge position. When steam reaches the trap, the element expands and closes off tightly.

Selection / Sizing / Capacities

Two orifice sizes are available: The 3/16" orifice should be used on all drip and tracing applications as well as small process applications with lower condensate loads. The 5/16" orifice is available to be used on process applications if additional capacity is required. Refer to the Capacity Chart to determine which model, the WT3001 or WT3003 is required to satisfy the condensate load based on steam inlet pressure.

• S = Strainer (WT3001S)
• SB = Strainer and blowdown valve (WT3001SB)

Example:

• Application: 3754 lbs/hr at 100 PSIG steam inlet pressure
• Size/Model: WT3003S, 5/16" orifice with strainer, Specify size & connections (NPT, SW, FLG)

Example Model Codes:

• WT3003S-13-N 3/4" NPT with strainer, and 5/16" orifice.
• WT3001SB-12-N 1/2" NPT with strainer and blowdown valve, 3/16" orifice.

Options

Strainer, blowdown valve, steam lock release and special bellows available.
SLR = Steam lock release

Special Bellows Option; available upon request:

• Fail-closed Bellows (standard bellows fails in open position)
• 43°F Sub-cool Bellows (Note: Standard bellows are designed for approximately 5°F sub-cool temperature)

Installation & Maintenance

Trap can be installed in any orientation. All internal working components are extremely easy to replace and can be performed while the trap body remains connected in-line. Repair kit includes ALL parts to fully rebuild the steam trap including thermal element, seat and gasket. The WT3000S model comes with an optional strainer. WT3000SB comes with optional blowdown valve for flushing dirt and scale from strainer.

Sample Specification

The steam trap shall be of a thermostatic type with stainless steel body, thermal element and internal strainer. Trap must be in-line repairable with a bolt-on type cover that is sealed with a spiral wound Stainless Steel AISI 316 gasket. Seat and valve to be hardened stainless steel.