Sump Drainers | Pumps | Watson McDaniel

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Connection Size

1 1/2" x 1 1/2"
2" x 2"
3" x 2"

Operating Condition

Temperature

Motive Pressure
Back Pressure
Min. Δ Pressure

Load
Fill Head
Motive Source

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Sump Drainers

Introduction

Sump Drainer

The Sump Drainer uses the same internal mechanism as the standard PMP models. The piping configuration is such that the liquid is discharged vertically out the top as opposed to horizontally out the side. This allows the unit to be easily positioned inside of a sump area. Condensate or water from the sump enters the tank through a stainless steel low resistance check valve. This unit is capable of operating with a maximum motive pressure of 150 PSIG using steam, air, nitrogen or other pressurized gas as the motive force.

Features

Equipped with our Patented “Snap-Assure” Mechanism which extends the useful life of the pump
Mechanism incorporates heat-treated stainless steel wear items for ultimate corrosion resistance
Dual compression springs made from Inconel-X-750 for high-temperature corrosive service
Operates using steam, air, nitrogen or other pressurized gases as the motive force
Non-Electric – can be used in remote locations or NEMA 4, 7, 9 and hazardous areas
Bult-in Strainer Screen

Sample Specification

The non-electric pressure powered pump shall be capable of operating with a maximum motive pressure of 200 PSIG provided by steam, air or other gas supply. The pump body shall be cast ASTM A-395 Ductile Iron capable of an ASME “UM” code stamp if requested. The pump mechanism shall be float operated with a patented “Snap-Assure” feature constructed of all stainless steel materials with all load bearing points hardened for extended service life. The mechanism shall feature two Inconel springs used in compression with motive & vent valves hardened to 40c Rockwell

How It Works

Water enters the inlet check valve thru a screened area at bottom of pump. After the pump fills, the internal mechanism is actuated and the pump is discharged by the motive steam or compressed air. Other compressed gases such as nitrogen can also be used.

Dimensions

PMPSP

PMPSPL

Capacities Chart

PMPSP - Sump Drainer

The PMPSP Sump Drainer, with carbon steel body, uses the identical internal mechanism as the standard PMP models. The piping configuration is such that the liquid is discharged vertically upwards as opposed to horizontally out the side. This allows the unit to be easily positioned inside of a sump area. Condensate or water from the sump enters the tank through a stainless steel low resistance check valve.

Model	Size	Type	Max Motive Pressure (psig)
PMPSP-1.5X1.5-N-SS	1 1/2" x 1 1/2"	NPT	150
PMPSP-2X2-N-SS	2" x 2"	NPT	150
PMPSP-3X2-N-SS	3" x 2"	NPT	150

PMPSPL

The PMPSPL Low-Profile Sump Drainer, with carbon steel body, uses the identical internal mechanism as the standard PMP models. The piping configuration is such that the liquid is discharged vertically upwards as opposed to horizontally out the side. This allows the unit to be easily positioned inside of a sump area. Condensate or water from the sump enters the tank through a stainless steel low resistance check valve.

Model	Size	Type	Max Motive Pressure (psig)	Capacity (lb/h)
PMPSPL-1.5X1.5-N-SS	1 1/2" x 1 1/2"	NPT	100