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Type SCV & DCV Pilot-Operated Check Valves

Brand: Bifold - by Rotork
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Bifold fluidpower Pilot-Operated check valves feature compact cartridge ball check valves in a 316S11 stainless steel body. 

The valves are used to hydraulically lock actuators until pressure is applied, and are available as single or dual Pilot-Operated types. 

Check valve cartridge seats are PEEK with the ball and spring stainless steel. The valve is ruggedly constructed, and affords a very low pressure drop. 

The standard cracking pressure is 5 psi. Flow ratings are either 68 or 190 litres per minute. 

Valve cartridges are easily replaced without disturbing hydraulic tubing. Dual Pilot-Operated valves have an internally piloted piston eliminating external pilot tubing.
Features
  • 316L stainless steel
  • Arctic service options to -60°C (-76°F)
  • NACE MR-01-75 option
Bifold fluidpower Pilot-Operated check valves feature compact cartridge ball check valves in a 316S11 stainless steel body. 

The valves are used to hydraulically lock actuators until pressure is applied, and are available as single or dual Pilot-Operated types. 

Check valve cartridge seats are PEEK with the ball and spring stainless steel. The valve is ruggedly constructed, and affords a very low pressure drop. 

The standard cracking pressure is 5 psi. Flow ratings are either 68 or 190 litres per minute. 

Valve cartridges are easily replaced without disturbing hydraulic tubing. Dual Pilot-Operated valves have an internally piloted piston eliminating external pilot tubing.
Features
  • 316L stainless steel
  • Arctic service options to -60°C (-76°F)
  • NACE MR-01-75 option
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Specifications

Brand

Approvals & Certifications

  • ISO 4406 Class I,8/15

Cracking Pressure

  • psi: 5 (kPa: 34.47, bar: 0.3447)

Enclosure, Body Material

  • 316S11 Stainless Steel

Filter

  • 10 microns

Flow Rate

  • 15 gpm (68 LPM) - Typical 4018
  • 29 gpm (190 LPM) - Typical 4035

Materials of Construction

  • Stainless Steel - Ball & Spring Material

Media

  • Mineral Oil
  • Some Chemicals
  • Water Glycol Mixtures

Mounting

  • Three M6 Clearance Holes - Typical 4018
  • Three M8 Clearance Holes - Typical 4035

Mounting Position

  • Any Orientation

NACE & NIST

  • NACE MR-0175

NPT Connection

  • 1/2” NPT Female - Typical 4018
  • 3/4” NPT Female - Typical 4035

Pressure Drop

  • psi: 17.4 (kPa: 120, bar: 1.2) at 29 gpm (190 LPM) - Typical 4035
  • psi: 65.27 (kPa: 450, bar: 4.5) at 15 gpm (68 LPM) - Typical 4018

Seat / Seal Material

  • Seal: Fluorosilicone
  • Seal: Nitrile
  • Seal: Viton
  • Seat: PEEK

Supply Pressure

  • psi: 3,000 (kPa: 20,700, bar: 207)
  • psi: 5,000 (kPa: 34,500, bar: 345)

Temperature Range

  • -20° to 180° C (-4° to 356° F) - Viton
  • -30° to 130° C (-22° to 266° F) - Nitrile
  • -50° to 40° C (-58° to 104° F) - Fluorosilicone
  • -60° C (-76° F) - Arctic Service Options
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