PRODUCT CATEGORIES

BI-METAL STEAM TRAP

BI-METAL STEAM TRAP

BI-METAL STEAM TRAP
BI-METAL STEAM TRAP
BI-METAL STEAM TRAP
Product Information
Product Name - BI-METAL STEAM TRAP
MODEL NST21
Product Category - · Steam and Flow Control Group · Traps · Bi-Metal Trap
Product Brand - Nordsteam

Product Features
BI-METAL STEAM TRAP

NST21 is a medium pressure, temperature sensitive, maintainable steam trap. The operating element comprises a stack of bimetal discs which control the flow of condensate, air and other incondensable gases by the effect of expansion at a temperature below steam saturation. It is resistant to waterhammer and corrosion. It provides an easy maintenance and repair.

INSTALLATION

Traps should be installed in easily accessible position and location for easy servicing. The maximum differential pressure stamped on product name plate must be higher than the maximum pressure differential across the trap.

1.Pitch all horizontal inlet lines towards the stream trap to help eliminate potential water hammer problems.

2.A dirt pocket and strainer (with blow down) should always be installed before trap.

3.Union fittings or flange connection and shut off valves should be installed on both sides of trap for ease of servicing and trap testing.

4.Install a test valve in outlet pipe and cap it. This allows trap to be tested. 

5.Blowdown piping using full steam pressure for (5) five minutes prior to service. This cleaning process will remove debris from piping.

6.Perform maintenance and cleaning 2/3 days after startup until system is clean. Then perform maintenance every 6/12 months in normal operation.

MAINTENANCE

When checked regularly and properly maintained, will provide optimum performance and long life. The mechanism should be inspected periodically and all dirt should be removed from working parts. Worn parts must be replaced. The safety measures for replacing a steam trap also apply for opening the cover or body of the steam trap. Always renew the gasket after disassembling the steam trap.

SPARE PARTS
No Part Name Material
1 BODY CARBON STEEL  (WCB)
2 DISC 2Cr13
3 SEAT 2Cr13
4 SCREEN SS 304
5 Bİ-METAL METAL SHEET FPA206-78
6 DISC GASKET SS 304
7 BONNET CARBON STEEL ( WCB )
8 GASKET SS 304 + GRAPHITE
9 BONNET BOLT 35
10 BODY GASKET SS 304
11 DISC STOPPER
12 BONNET STUD SAE Gr.5

DIMENSIONS
SIZE  BSP L H1 H2
1/2 '' 95 mm 22 mm 100 mm
3/4 '' 95 mm 22 mm 100 mm
1 " 95 mm 22 mm 100 mm
11/4 " 200 mm 39 mm 140 mm
11/2 " 200 mm 39 mm 140 mm
2 " 230 mm 39 mm 140 mm

CONNECTION FLANGED
Sizes  1/2’’  3/4’’ 1” 11/4”  11/2”  2”
Weights (KG) 2,7 2,7 2,5 3 3,7 4,7

OPERATING CONDITIONS
MAX. ALLOWABLE PRESSURE PMA (BAR) 40
MAX. ALLOWABLE TEMPERATURE TMA (ºC) 350
MAX. DIFFERENTIAL PRESSURE PMD (BAR) 21