Internationally Approved Product
ULListed
FMApproved
A suction line pressure gauge measures the pressure on the inlet side of the fire pump. Depending on operating conditions, suction pressure can fall below atmospheric pressure. Vacuum or compound (vacuum and positive pressure) scale gauges are therefore used in this application. The pump's suction conditions and scale range are taken into account when selecting a compound gauge that shows vacuum and pressure together.
The WIKA Type 111.10 is a Bourdon tube pressure gauge with copper-alloy wetted parts, developed for applications such as pumps and water systems. Vacuum/compound scales are offered from 30″Hg (-1 bar) vacuum up to 200 psi (16 bar) pressure.
The gauge is designed to EN 837-1 and ASME B40.100. Standard accuracy is ±3/2/3% per Grade B; Grade A (±2/1/2%) is available as an option. The 4″ dial version has a white aluminium dial, black aluminium pointer and 1/4″ NPT lower mount connection.
The correct scale is determined when ordering, according to the pump's suction conditions and expected pressure range. Suction line pressure gauges can also be supplied under the Winters brand.
| Specification | Value |
|---|---|
| Dial Sizes | 1½″, 2″, 2½″, 4″ (40, 50, 63, 100 mm) |
| Vacuum / Compound Range | 30″Hg (-1 bar) / 0 / up to 200 psi (16 bar) |
| Accuracy | ±3/2/3% Grade B (option: ±2/1/2% Grade A) |
| Working Pressure | Steady: 3/4 of full scale; fluctuating: 2/3 |
| Temperature | Ambient: -40 – 60 °C; medium: max. 60 °C |
| Connection | Copper alloy, lower mount, 1/8″ or 1/4″ NPT (4″: 1/4″) |
| Case / Window | Black plastic / snap-fit clear plastic |
Technical values are based on manufacturer documents; confirm against the current data sheet before ordering.
Fire pump suction (inlet) line
Pump arrangements drawing from a tank or suction pit
General pump and water system applicationsOther equipment considered together with the Suction Line Pressure Gauge in the fire pump room:
