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KDC 65-200 Pressure Control Valve

Brand: Danfoss

The KDC valve is a pressure control valve. The valve controls the discharge pressure of the compressor to ensure fast build-up of pressure and lubrication pressure. 

The valve also acts as a check valve in the discharge line of the compressor. 

The KDC valve is force-controlled so that when pressure in the oil separator becomes psi: 29 (kPa: 200, bar: 2) higher than the suction pressure, the spring is compressed and the valve opens. 

In low-pressure units (boosters), the spring requires a differential pressure of psi: 7(kPa: 50, bar: 0.5) for the valve to open.

Specifications

Brand

Approvals & Certifications

  • BV
  • CE
  • CRN
  • DNV
  • EAC
  • PED

Bonnet Material

  • Steel - (P285QH EN 10222-4, ASTM LF2 A350)

Bore Size

  • 1.25” to 8” (65 to 200 mm)

Bushing Material

  • Cast Iron - Bushing for Spring, Front & Rear Bushing

Cone Material

  • Cone Plate, Rod: Steel (11SMn30 EN 10087, ISO Typical 2 R683/9, ASTM Grade 1213 A29)

Differential Pressure

  • psi: 21.76 to 29.01 (kPa: 150 to 200, bar: 1.5 to 2) - Min.
  • psi: 7.252 (kPa: 50, bar: 0.5) - Spring

Enclosure, Body Material

  • Valve House: Steel (G20Mn5QT EN 10213-3, ASTM LCC A352)

Flow Capacity

  • 90 to 878 Cv

Flow Rate

  • 78 to 757 Kv (m³/hour)

Gasket Material

  • Fiber
  • Non-Asbestos

Materials of Construction

  • Aluminum - ID Plate
  • Nylon - Washer

Nut & Bolt Material

  • Steel

O-Ring Material

  • Cloroprene (Neoprene, Standard KDC, Standard Valve)
  • FKM (Hydrocarbon KDC)
  • Viton (Hydrocarbon Valve)

Piston Material

  • Piston Rod: Steel (11SMn30 EN 10087, S235JRG2 EN 10025, ISO Fe260B 630, Typical 2 R683/9, ASTM Grade C A283, Grade 1213 A29)

Pressure Range

  • psig: 580 (kPa: 4,000, bar: 40)

Ring Material

  • PTFE - Teflon Ring, Glide Ring
  • Steel - Retaining Ring Bore, Spring

Screw Material

  • Steel - Driv Screw
  • Steel (11SMn30 EN 10087, ISO Typical 2 R683/9, ASTM Grade 1213 A29)

Spring Material

  • Steel - Spring for Cone

Temperature Range

  • -50° to 150° C (-58° to 302° F)

Welded Connection

  • 2-1/2” Butt Weld ANSI (B 36.10 Schedule 40), DIN (2448)
  • 3” Butt Weld ANSI (B 36.10 Schedule 40), DIN (2448)
  • 4” Butt Weld ANSI (B 36.10 Schedule 40), DIN (2448)
  • 5” Butt Weld ANSI (B 36.10 Schedule 40), DIN (2448)
  • 6” Butt Weld ANSI (B 36.10 Schedule 40), DIN (2448)
  • 8” Butt Weld ANSI (B 36.10 Schedule 40), DIN (2448)

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