Batescrew High Head Valves
Pressure Ratings

Maximum on-seating pressure for all high head valves is six metres, maximum off-seating pressure is de-rated for the larger sizes, as indicated below.
(On-seating is pressure from the channel side of a valve.)		  
Maximum on-seating and off-seating pressure, in Metres head of water.

 

300

350

375

400

450

500

525

600

675

750

900

1050

1200

1350

1500

1650

1800

On-seat

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

Off-seat

6

6

6

6

6

6

6

6

6

6

6

6

6

6

5

5

4