GPM Pumps25+ years of boiler room experience · 20,000+ parts stocked in-house · Six offices
GPM Pumps
Stainless steel vertical multistage boiler feed pumps, condensate return pumps, and booster pumps
From a replacement pump to a new feed system. We supply DP Pumps stainless steel multistage pumps, through Global Pump Marketing (GPM), that keep boiler feedwater, condensate, and other critical boiler-room systems moving.
Boiler Feed Pumps
- DP Pumps DPV vertical multistage boiler feed pumps
All-stainless multistage pumps for feedwater service, with flows to 800 gpm, heads to 1,000 ft, and liquid temperatures to 284°F. Ten sizes, DPV 2 through DPV 125, with 0.5 to 60 hp motors. 304 stainless standard, 316 available. - Low-NPSH boiler feed pumps
DPV models with a low-NPSH first-stage impeller for hot feedwater pulled from a deaerator or feed tank, where there isn’t much suction head to work with. - Built for the boiler room
Standard NEMA C-face motors any motor shop can source, VFD operation down to 30 Hz, and on 7.5 hp and larger a spacer coupling that lets you change the seal without pulling the motor. Dimensionally interchangeable with other major vertical multistage brands, so a DPV usually drops onto the existing base and piping.
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Condensate & Booster Pumps
- Condensate return pumps
DPV pumps in 316 stainless with tungsten-carbide seal faces, rated for condensate to 212°F, matched to the return temperature, flow, and available head. - Deaerator & feed tank feed pumps
Selected around the vessel pressure, water temperature, required flow, and suction conditions, with the low-NPSH first stage where the margin is tight. - Horizontal multistage & booster pumps
DPHI/DPHM horizontal pumps with the same hydraulics as the DPV in a close-coupled layout, and DPV/DPVF pumps for domestic and process water boosting. DPVF models carry NSF/ANSI 61 and 372 certification for potable water.
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Other GPM Pump Lines
- Sealless magnetic-drive pumps
Greenpumps (formerly Caster) mag-drive pumps for applications where eliminating the mechanical seal is the point, plus authorized replacement parts for existing Caster pumps. - Self-priming & gear pumps
Victor Pumps self-priming open-impeller centrifugals for industrial wastewater (S-Pump) and internal gear pumps for viscous liquids (R-Pump). - Calpeda replacement pumps
Replacement pumps and parts for packaged equipment that shipped with a Calpeda pump. GPM stocks parts and selected replacement pumps in the U.S. - Slurry pumps, screw pumps & check valves
PEMO slurry pumps, Garbarino marine and industrial pumps, Kuhn Archimedean screw pumps, and HDL ball check valves, all available through GPM.
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Why Buy Pumps Through Tri-Tech?
Our team sizes against the actual duty: boiler pressure, evaporation rate, feedwater temperature, required flow, discharge pressure, and suction conditions. You don't just get a model number. You get the reasoning behind the selection.
From there, we support the project the way we support our boiler equipment:
- Responsive budgetary pricing
- Formal quotes when you're ready to buy
- Cut sheets and dimensional drawings for submittals
- Application review alongside consulting engineers
- Freight coordination
- Parts and replacement support after installation
With six offices, 20,000+ parts stocked in-house, and a 24/7 line, we're equipped to support both the new pump you're specifying and the existing pump that just failed.
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Brands we represent
Pump Sales, Parts & Support
Six offices across the Midwest:
Council Bluffs, IA · Sioux City, IA · Lincoln, NE · Gibbon, NE · Rapid City, SD · Denver, CO
Serving steam plants throughout the United States.
Hours: Monday–Friday, 7:00 a.m.–4:00 p.m.
24/7: 800-874-9920
Email: support@tritechsales.com
Boiler Feed Pump Questions, Answered
Why a vertical multistage pump for boiler feed?
A multistage centrifugal builds pressure in steps. Each impeller and diffuser adds the same lift, so the number of stages sets your pressure and the pump size sets your flow. In feedwater service that means steady flow against a modulating valve, smooth operation on a VFD, and a compact in-line pump that fits next to a deaerator or feed tank. Stainless wetted parts stand up to hot treated water.
Regenerative turbine pumps still have a place in small, on/off, low-flow/high-pressure plants, and continuous-feed systems with a modulating valve usually need a minimum-flow bypass. The selection comes down to flow, discharge pressure, feedwater temperature, suction conditions, operating cycle, and control strategy.
Why do suction conditions matter so much?
Feedwater out of a deaerator is at or near its boiling point, so the margin between the pressure at the pump inlet and the point where the water flashes to steam is thin. If available NPSH drops below what the pump needs, water flashes in the first stage. That’s cavitation, and it eats impellers and seals. DP specifies a minimum inlet pressure of NPSHr plus 3 ft and offers a low-NPSH first-stage impeller for tight installations. That’s why we want to understand the suction setup before recommending a pump.
What do you need for a quote?
For most budget quotes, we'll start with:
- Required flow or capacity
- Discharge pressure
- Feedwater temperature
- Suction conditions
Replacing an existing pump? Send us a photo of the nameplate. On a DP pump the model number alone tells us size, stages, and materials, and on other brands it’s usually enough to start the cross-reference.
Can I get pump parts and seals locally?
Yes. We supply seal kits, stage bearings, and repair parts for DP pumps through GPM’s U.S. stock, backed by 20,000+ parts stocked in-house across six offices, and the motor is a standard NEMA C-face you can get from any motor supplier. For failures that can’t wait until morning, call 800-874-9920 anytime, 24/7.