Danfoss KDC 200 multifunctional compressor pressure control valve, 200 mm (8 in) butt weld ASME B36.10M Schedule 40, angle-way, 0.5 bar opening differential, 40 bar MWP

Danfoss KDC 200 multifunctional compressor valve (pressure control valve), code 148G3607. Angle-way valve with butt-weld connections to ASME B36.10M Schedule 40, nominal size 200 mm (8 in), for industrial refrigeration compressor packages. The KDC controls the compressor discharge pressure to ensure a fast build-up of pressure and lubrication (oil) pressure at start-up, and simultaneously acts as a check valve in the compressor discharge line to prevent reverse flow when the compressor stops. The valve is force-controlled: it opens when the pressure downstream (oil separator / discharge side) rises to 0.5 bar (7.5 psi) above the suction pressure, at which point the spring is compressed and the cone lifts. This 0.5 bar spring setting suits low-pressure (booster) compressors, which require only a small differential to open. Housing and bonnet are low-temperature steel with stainless-steel bolts; the valve is mounted vertically with the cone downward and carries a threaded NPT 1/4 in pilot-line connection on the bonnet. Maximum working pressure 40 bar (580 psig); media temperature range -50 °C to 150 °C (-58 °F to 302 °F). Flow coefficient Kv 757 m³/h (Cv 878 gal/min) fully open. Suitable for HCFC / HFC, R717 (ammonia) and R744 (CO2) refrigerants. PED category III. CE marked.

Type

Danfoss KDC 200 multifunctional compressor valve (pressure control valve)

Code number

148G3607

Series

KDC / GVD (mechanical pressure regulating valves)

Function

discharge-pressure control + discharge-line check valve (fast oil/lubrication pressure build-up at compressor start)

Direction

Angle-way

Connection type

Butt weld

Connection standard

ASME B36.10M Schedule 40

Nominal size

200 mm (8 in)

Opening (set) differential pressure

0.5 bar (7.5 psi)

Maximum working pressure

40 bar (580 psig)

Media temperature range

-50 °C to 150 °C (-58 °F to 302 °F)

Kv fully open

757 m³/h

Cv fully open

878 gal/min

Body / bonnet material

low-temperature steel; stainless-steel bolts

Pilot connection

NPT 1/4 in (on bonnet)

Mounting

vertical, cone downward

Refrigerants

R134a, R22, R401A, R402A, R404A, R407A, R407B, R407C, R407F, R409A, R410A, R421A, R502, R717, R744, R507A

PED category

III

Approvals

CE marked

Net weight

92 Kilogram

Gross weight

99.63 Kilogram

EAN

5702428279550

Standard

ASME B36.10M Schedule 40

Size / Series

200 mm

Material

Low-temperature steel

Pressure Rating

40 bar

Temperature Range

-50 °C to 150 °C

HS Code

8481.10