Straight type water hammer arrester

Category Pump accessories

Certificate: CE
Standard: Refer to NFPA 20, ASSE 1010, PDI-WH 201
Connection: Threaded as NPT or BSPT, flanged as ANSI or EN 1092
Feature: Adjustable air bag pressure, horizontal or vertical installation
Temperature: -15°C to 60°C (NBR diaphragm), -15°C to 80°C (Viton diaphragm)
W. pressure: 12 bar for bronze / CI, 20 bar for DI / SS, 16 / 25 bar for DI (source 2)
Surface: Rough SS / CI / DI / bronze

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Product Details

Straight type water hammer arrester is straight shape, and used to absorb the shock caused by sudden stop in the speed of water or change in direction. It protects against noise and potential damage of water hammer in the piping system.

Available size (Source 1 with ISO)

Size	Connection	Working pressure (bar)	Ref.No.
1/2″ / DN15	THD	12 / 20	U5201
3/4″ / DN20	THD	12 / 20	U5202
1″ / DN25	THD	12 / 20	U5203
1-1/2″ / DN40	THD	12 / 20	U5204
2″ / DN50	THD	12 / 20	U5205
2-1/2″ / DN65	THD	12 / 20	U5206
3″ / DN80	THD	12 / 20	U5207
4″ / DN100	THD	12 / 20	U5208
3″ / DN80	FLG	12 / 20	U5209
4″ / DN100	FLG	12 / 20	U5210
5″ / DN125	FLG	12 / 20	U5211
6″ / DN150	FLG	12 / 20	U5212
8″ / DN200	FLG	12 / 20	U5213
10″ / DN250	FLG	12 / 20	U5214
12″ / DN300	FLG	12 / 20	U5215

Note: For flanged connection, it is available with ANSI B16.1 Class 125 / 250, B16.42 Class 150 / 300, EN 1092-2 PN10 / PN16 / PN25, etc.

Available size (Source 2 with ISO)

Size	Connection	Working pressure (bar)	Ref.No.
1-1/2″ / DN40	FLG	16 / 25	U5221
2″ / DN50	FLG	16 / 25	U5222
2-1/2″ / DN65	FLG	16 / 25	U5223
3″ / DN80	FLG	16 / 25	U5223
4″ / DN100	FLG	16 / 25	U5225
5″ / DN125	FLG	16 / 25	U5226
6″ / DN150	FLG	16 / 25	U5227
8″ / DN200	FLG	16 / 25	U5228
10″ / DN250	FLG	16 / 25	U5229
12″ / DN300	FLG	16 / 25	U5230