Brand: Danfoss

Danfoss 148G3594 KDC 100 D 2 Compressor Discharge Valve, 100 mm

Name: Danfoss 148G3594 KDC 100 D 2 Discharge Valve | Seven Star
Brand: Danfoss
SKU: 148G3594

Description

KDC 100 D 2: a multifunction compressor valve with a 2 bar opening differential

Danfoss 148G3594 is a KDC 100 D 2, a multifunction compressor valve for industrial refrigeration with 100 mm (4 in) butt-weld connections to EN 10220. It is an angleway valve with a fully open Kv value of 203 m3/h and a net weight of 18.408 kg.

The D version with the number 2 refers to the opening differential of 2 bar (29 psi) printed on the page. The maximum working pressure is 40 bar (580 psig) and the temperature range is -50 to 150 C. CE and UA approvals are listed.

Technical specifications

Parameter	Specification
Danfoss code number	148G3594
Type	KDC 100 D 2
Approvals as listed	CE; UA
Connection size	4 in / 100 mm
Connection standard	EN 10220
Connection type	Butt weld
Differential pressure	2 bar
Inlet connection size	100 mm
Kv Fully open	203 m3/h
Maximum working pressure	40 bar
Refrigerants	R134a; R22; R401A; R402A; R404A; R407A; R407B; R407C; R407F; R409A; and others listed in the data sheet
Temperature range	-50 C to 150 C
Net weight	18.408 kg
EAN	5702428279680

What a compressor discharge valve does

A compressor discharge valve acts as a check valve on the compressor outlet, as a pressure-holding valve that keeps a minimum differential across the compressor, and often as a shut-off point. The KDC combines these functions, so the compressor is protected against back-flow of hot gas when it stops.

The KDC series covers 65 to 200 mm in a single data sheet (type KDC 65-200), and the codes differ by size, version (A or D) and differential (0.5, 2 or 3 bar). This code therefore stands for the 100 mm, D version, with 2 bar.

Ordering and installation checks

Match the differential setting to the compressor and system design; the wrong value cannot be changed on site. Install according to the installation guide for the KDC compressor discharge valve, with the arrow in the flow direction and the stem vertical where possible.

Lifting equipment is useful at 18 kg. Confirm the connection standard, pipe wall thickness, refrigerant and the A or D version before ordering. The valve is not made for regulation of flow and should operate fully open or fully closed.

Record the code number on the plant documentation because the opening differential, the size and the A or D version are all encoded in it, and a replacement with a different differential changes how the compressor loads at start-up.

Other types and sizes from the same Danfoss family that appear in the Danfoss store listing include KDC 65 D 0.5 (148G3585), KDC 65 D 2 (148G3586), KDC 65 A 0.5 (148G3587), KDC 65 A 2 (148G3588), KDC 80 D 0.5 (148G3589), KDC 80 D 2 (148G3590), KDC 80 A 0.5 (148G3591), KDC 80 A 2 (148G3592). These are listed for orientation only; each has its own datasheet values, so check size, connection and version before ordering.

Documents and quotation

The reference document for this code is the Danfoss Pressure control valve, type KDC 65-200 AI225686433549en-001101 (manufacturer, unaltered), attached as the unaltered manufacturer PDF. See also regulators. Request a price for 148G3594 by sending the quantity; Seven Star LLC is an independent supplier in Muscat.

Datasheets & Documents

Datasheet Danfoss Pressure control valve, type KDC 65-200 AI225686433549en-001101 (manufacturer, unaltered) Download

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About brand

Danfoss is the Danish engineering group that makes refrigeration and air-conditioning controls, heating components, variable speed drives and mobile hydraulics. Mads Clausen founded it on 1 September 1933 at his parents' farm in Nordborg on the island of Als, after making his first refrigeration expansion valve in 1932. Nordborg is still the group's headquarters, and Danfoss remains controlled by the Clausen family through the Bitten & Mads Clausen Foundation.

Danfoss company profile

Founded	1 September 1933, Nordborg, Denmark, by Mads Clausen (1905–1966)
First product	Thermostatic expansion valve for refrigeration
Headquarters	Nordborg, Denmark
Ownership	Private; majority controlled by the Bitten & Mads Clausen Foundation and the Clausen family
Size	About 42,000 employees (2023)
Business segments	Danfoss Climate Solutions (refrigeration, air conditioning and heating), Danfoss Drives (VLT and VACON frequency converters, soft starters), Danfoss Power Solutions (mobile and industrial hydraulics)
Brands in the group	VLT, VACON, Eaton Hydraulics (bought 2021), Ikusi radio remote controls

Milestones

1932–1933: First expansion valve; the company is founded in Nordborg.
1939: 26 employees. By the 10th anniversary in 1943 the company has 179.
1950s: Rapid growth turns Nordborg into a Danfoss town with housing and schools for its workforce.
1968: Danfoss launches its VLT frequency converter, one of the first mass-produced AC drives.
2014: Acquisition of the Finnish drives maker Vacon, now the VACON brand.
2021: Acquisition of Eaton's hydraulics business.

Choosing Danfoss products

For solenoid valves, check the operating principle. A direct-operated valve such as EV210B opens even at 0 bar differential pressure. A servo-operated valve such as EV220B needs a minimum differential (typically about 0.3 bar) to open, while an assisted-lift valve such as EV250B works from 0 bar. Coils are ordered separately, so the voltage on the coil (for example 230 V AC or 24 V DC) must match the control circuit. For drives, the VLT family is split by application: FC 51 Micro Drive for small machines, FC 102 HVAC Drive for fans and pumps in buildings, FC 202 AQUA Drive for water, and FC 302 AutomationDrive for demanding industrial duty.

Where Danfoss products are used

In Oman and the GCC, Danfoss drives run pumps, fans and compressors in district cooling plants, water and wastewater stations, desalination and building HVAC. Danfoss pressure switches, transmitters and solenoid valves are built into chillers, refrigeration plants, boilers and hydraulic systems, and AB-QM valves balance chilled-water circuits in large buildings.

Danfoss products we list

Family	Examples
Variable speed drives and soft starters	VLT Micro Drive FC 51, VLT HVAC Drive FC 102, VLT AQUA Drive FC 202, VLT AutomationDrive FC 302, FC 280, iC2-Micro, VACON NXP, MCD 600 soft starter
Solenoid valves and coils	EV220B, EV210B, EV250B, EV225B steam, EVR 25, AM230C coil
Pressure switches and thermostats	KP 37, KP 44, RT 200, CS, MBC 5000, KPS 77, RT 101
Pressure transmitters	MBS 3000, MBS 5100, MBS 3250, MBS 4251 Ex, AKS 33, DST P92S SIL 2
HVAC and refrigeration valves	AB-QM PICV, NovoCon S, AB-PM, AVTA, ICV, TE 5 element

Ordering Danfoss products: what we need

Send the Danfoss code number from the label (for example 032U7115 or 131B0149) or the full drive type code (FC-302P3K0T5...). For drives, add the motor power, supply voltage and any fieldbus option. For valves, add the size, connection, medium and coil voltage. For pressure switches and transmitters, add the range, output and pressure connection.

Facts checked against Danfoss's company history pages and published company data, October 2026.

Browse Danfoss products by category: AC Drives, Pressure Instrumentation, Control Valves, Solenoid Valve.