Why hermetic pumps for ammonia?

Canned-motor and magnetic-drive hermetic pumps eliminate shaft seals — the main failure and leakage point on toxic and flammable refrigerants. They also survive liquid slugging and dry running better than sealed pumps.

What's the overfeed ratio for NH₃ pumps?

Typical liquid overfeed ratio is 3:1 to 4:1 for flooded coils — pump three to four times the evaporated mass so coils stay wetted, improving heat transfer 20–30% vs DX.

Do you supply pumps for pumped CO₂ systems?

Yes — high-pressure hermetic pumps rated for 40–60 bar liquid CO₂ circulation on medium/low temperature transcritical booster and cascade systems, from Witt, Hermetic and other specialists.

How should a refrigeration pumps project be planned before requesting quotes?

Define the project scope first — capacity, temperature ranges, throughput, site constraints and required certifications — then use that scope to brief suppliers. Sending vague enquiries produces quotes that can't be compared. ColdMatch is supplier-neutral: we help structure the project before matching it to shortlisted vendors worldwide.

What drives the budget of a refrigeration pumps project?

Capacity, refrigerant strategy (NH₃, CO₂, HFO or hybrid), automation level, envelope quality, controls, redundancy and site-specific factors like power availability and climate. Country and logistics also matter. Use the ColdMatch cost benchmarks and infrastructure builder to model a realistic range before financing conversations.

What is a typical timeline for a refrigeration pumps project?

From concept to commissioning most commercial cold-chain projects run 9–24 months: FEED and RFQ (2–4 months), procurement and long-lead equipment (3–6 months), civils and installation (4–10 months), commissioning and validation (1–3 months). Complex pharma, ASRS or transcritical CO₂ projects can extend further.

What are the most common mistakes buyers make on refrigeration pumps projects?

Buying equipment before defining the project, under-sizing refrigeration load, ignoring commissioning and validation, single-sourcing without a neutral bid comparison, and treating financing as an afterthought. ColdMatch provides planning checklists, RFQ templates and a supplier-neutral tender flow to avoid these traps.

What is refrigeration and glycol pumps best for?

Refrigeration and glycol pumps suit: Ammonia liquid overfeed and glycol circulation systems; Condenser and chilled-water circuits in industrial plant; Pump replacement where efficiency or reliability has degraded; Projects buying pumps, motors and VSDs together.

When is refrigeration and glycol pumps not the right fit?

Refrigeration and glycol pumps are not the right category for: Complete refrigeration plant procurement; Irrigation or potable water pumping; Seal kits and spare-part orders.

What information do suppliers need before quoting refrigeration and glycol pumps?

Prepare the following before requesting quotes: Flow rate and head required at the duty point; Fluid type, temperature and glycol concentration; Number of duty and standby pumps; Materials, seal type and hazardous-area requirements; Motor supply, VSD and control interface; Delivery site and required date.

Refrigeration Pumps

Refrigeration pumps — NH₃ liquid overfeed, CO₂ and glycol circulation

Source specialist refrigeration pumps: hermetic and canned-motor pumps for ammonia liquid overfeed, high-pressure pumps for pumped CO₂ circulation and glycol/brine pumps for secondary refrigerant loops.

Human Global Expert Guidance•Vendor-Neutral Procurement•Qualified International Suppliers•Commercial Confidentiality

Get Free Quotes — Prefilled RFQ Equipment Intelligence

Hermetic / canned-motor ammonia pumps — zero shaft leakage
Pumped CO₂ liquid circulation for large transcritical plants
Glycol and brine pumps for secondary loops and IQF tunnels
Materials: stainless steel, no copper alloys for NH₃
Witt, Hermetic, Teikoku, Cornell, Grundfos, KSB and more

Section 1

Related pump categories

All industrial pumpsOpen Chilled water pumpsOpen Condenser & cooling pumpsOpen

Section 2

Refrigeration systems

Ammonia (NH₃) refrigerationOpen CO₂ (R744) refrigerationOpen IQF freezersOpen Blast freezersOpen Cold storage & warehouse coolingOpen

Section 3

Sizing & procurement

Refrigeration load calculatorOpen Compressor sizingOpen Project CAPEX estimatorOpen Engineering & Planning CenterOpen

FAQ

Refrigeration Pumps — frequently asked

How ColdMatch Group works — independent B2B procurement and sourcing platform — ColdMatch Group is an independent B2B procurement and sourcing platform for industrial refrigeration, cold storage and cold-chain projects from USD $250K+, connecting buyers with qualified third-party suppliers, EPC contractors and independent financing providers.

Project-first

Plan the refrigeration pumps project before choosing suppliers

Complete cold-chain outcomes depend on planning, budget realism, timeline discipline and neutral bid comparison — not on picking equipment first.

Project planning checklist

Cover the fundamentals before you brief suppliers.

·Define capacity, temperature bands and throughput
·Confirm site, power, water and permits
·Choose refrigerant strategy and automation level
·Set redundancy, monitoring and validation targets
·List required certifications (GDP, HACCP, BRC, ISO)
·Agree budget envelope and financing route

Full planning checklist (download)Infrastructure Builder

Budget factors

What actually moves the number on a commercial cold-chain project.

·Refrigeration plant + refrigerant choice
·Panels, envelope, floors, doors and structure
·Racking, MHE and automation level
·Controls, monitoring, alarms and BMS
·Redundancy (N, N+1, 2N) and validation
·Country, logistics, duties and installation labour

Budget planning guide Cost benchmarks Financing routes

Typical project timeline

Rule-of-thumb schedule for a commercial cold-chain project.

FEED, scope, RFQ2–4 months
Bid review, contracting1–2 months
Procurement + long-lead3–6 months
Civils, installation4–10 months
Commissioning, validation1–3 months

Project planning guide Master Planner

Common mistakes to avoid

Recurring patterns across hundreds of cold-chain briefs.

·Buying equipment before defining the project
·Under-sizing refrigeration load and standby
·Skipping commissioning, validation and training
·Single-source without a neutral bid comparison
·Ignoring refrigerant regulation and phase-out
·Treating financing as an afterthought

Commercial risk guide Refrigerant phase-out guide

Related resources

Continue the refrigeration pumps project

Project Builders (15 verticals)

Preset the Infrastructure Builder by industry.

Start a neutral RFQ

Structured brief to shortlisted suppliers.

Equipment Intelligence

Compare technologies before buying.

Procurement Academy

Incoterms, FAT/SAT, factory inspection.

Global Project Map

Reference projects worldwide.

Trust Center

How ColdMatch stays supplier-neutral.

ColdMatch Group is the specialized cold-chain platform of Global B2B Group — the worldwide B2B procurement and project ecosystem.

Brief the market on your refrigeration pumps project

One structured RFQ, vendor-neutral to shortlisted suppliers. Prefilled with pillar context — you refine the details. No commitment, no fees.

Compare Suppliers — Prefilled RFQ

Refrigeration and glycol pumps: is this the right category?

Pumps circulate refrigerant, glycol or condenser water through the plant; duty point, fluid and materials determine selection. ColdMatch routes pump schedules to suppliers for comparable quotes.

Best for

Ammonia liquid overfeed and glycol circulation systems
Condenser and chilled-water circuits in industrial plant
Pump replacement where efficiency or reliability has degraded
Projects buying pumps, motors and VSDs together

Not ideal for

Complete refrigeration plant procurement
Irrigation or potable water pumping
Seal kits and spare-part orders

Information checklist before an RFQ

Flow rate and head required at the duty point
Fluid type, temperature and glycol concentration
Number of duty and standby pumps
Materials, seal type and hazardous-area requirements
Motor supply, VSD and control interface
Delivery site and required date

Buyer questions answered

How are refrigeration pumps sized?

Liquid overfeed pumps are sized from the evaporator mass flow multiplied by the overfeed ratio (commonly 3:1 to 4:1), plus static and friction head across the distribution circuit and a NPSH margin for saturated liquid. Pumped CO₂ circuits additionally need pressure rating for 40–60 bar liquid. Duty, refrigerant, temperature and circuit layout must be stated before suppliers can quote.

What type of pump is used in industrial cooling systems?

Hermetic canned-motor or magnetic-drive pumps are standard for ammonia and CO₂ liquid circulation because they eliminate shaft-seal leakage. Secondary loops use end-suction or split-case centrifugal pumps for glycol, brine and chilled water. Condenser and cooling-tower circuits use high-flow centrifugal pumps selected for fouling tolerance and part-load control.

Can ColdMatch source large pumps for refrigeration projects?

Yes — ColdMatch runs supplier-neutral RFQs for high-flow industrial and refrigeration-plant pumps, including hermetic NH₃ pumps, high-pressure CO₂ pumps and large glycol or chilled-water sets. We do not manufacture pumps; we help buyers compare qualified manufacturers against duty, material, refrigerant and control requirements.

Typical project scale

•Plant-room overfeed sets: 5–50 m³/h
•Secondary glycol and chilled-water loops: 50–500 m³/h
•Large condenser and district-cooling duties: 500 m³/h+

Exact system sizing depends on required temperature, ambient climate, product load and turnover rate, door openings, insulation specification, storage duration, redundancy level and operating hours. ColdMatch does not manufacture equipment — we help industrial buyers compare suitable suppliers and technologies against project-specific technical and commercial requirements.

Information suppliers need to quote

•Country, project location and site status (greenfield or existing building)
•Application and product stored or processed
•Required temperature range and any humidity requirement
•Storage capacity (m², m³ or pallet positions) and daily throughput
•Ambient/design climate conditions at site
•Available power supply and backup or redundancy requirement
•Preferred refrigerant, if already defined by policy or regulation
•Indicative budget range and target commissioning date
•Duty flow, differential head and NPSH available
•Fluid, refrigerant and material compatibility constraints

Request Refrigeration Pump Quotes

Continue your specification

All industrial pumps Chilled water pumps Condenser & cooling water pumps Ammonia (NH₃) refrigeration Industrial refrigeration systems

Qualify, then request quotes

Take this to a structured refrigeration RFQ

Refrigeration bids are only comparable when refrigerant, duty, evaporating temperature, redundancy and controls are specified. Qualify the design intent, then issue one RFQ.

Technology qualificationNH₃, CO₂ or HFO — CAPEX, OPEX and application fit.RFQ checklistDuty, redundancy, controls and commissioning scope.Project documentation centerAssemble the technical pack before tendering.

Start structured RFQ — free How the process works

Supplier-neutral. Free for buyers and project owners. Best suited to commercial projects from USD $250,000.