BI-METAL STEAM TRAP

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 NST-21F
Product Category - · Nordsteam Steam and Flow Control Group · Steam Traps · Bi-Metal Trap
Product Brand - Nordsteam

Product Features
BI-METAL STEAM TRAP

NST-21F ıs 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 present temperature below steam saturation. It is resistant to water hammer and corrosion. It provides an easy maintenance and repair.

INSTALLATION

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

With regular check and proper maintenance you get optimum performance and a long life service from our product. The mechanism should be inspected periodically and all dirt should be removed from working parts. Worn parts must be replaced. Always renew the gasket whenever you disassemble the steam trap.

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

DIMENSIONS
Size L H1 H2 D D1 D2 N-Ø
DN15 150 mm 22 mm 100 mm 95 65 45 4-14
DN20 150 mm 22 mm 100 mm 105 75 58 4-14
DN25 160 mm 22 mm 100 mm 115 85 68 4-14
DN32 210 mm 40 mm 140 mm 140 100 78 4-18
DN40 210 mm 40 mm 140 mm 150 110 88 4-18
DN50 230 mm 40 mm 140 mm 165 102 102 4-18

CONNECTION FLANGED
Sizes DN15 DN20 DN25 DN32 DN40 DN50
Wieghts (KGS) 4 4,8 5,2 6,3 7,3 9,4

OPERATING CONDITIONS
MAX. ALLOWABLE PRESSURE PMA (BAR) 40
MAX. ALLOWABLE TEMPERATURE TMA (ºC)ºC) 300
MAX. DIFFERENTIAL PRESSURE PMD (BAR) 21