Model SLR-2

Description

Model SLR-2 is high performance, pressure loaded diaphragm-type, flow-to-open pressure reducing regulator. Design includes an internal pressure balancing pistoncylinder that provides high flow capacity and high pressure drop capability. Performance meets or exceeds that of competitive pressure loaded or pilot-operated designs. A non-relieving pressure regulator "loader" is bracket mounted to the top of the dome. The set point of the loader controls the upstream supply pressure into the dome to maintain the desired downstream pressure of the SLR-2. Pressure in the dome will constantly bleed out through a filter and check valve which is piped back into the outlet of the body of the pressure reducing regulator.

Inlet Design Pressure

• Up to 3600 psig (248 Barg)

Outlet Pressure

• 0.5 - 1250 psig (0.03 - 86.1 Barg)
• Multiple springs - ranges dependent on selection of the unloader.

Line Sizes

• 1/2" (DN15)
• 3/4" (DN20)
• 1" (DN25)
• 1-1/4" (DN32)
• 1-1/2" (DN40)
• 2" (DN50)
• 2-1/2" (DN65)
• 3" (DN80)
• 4" (DN100)

End Connections

• Standard: Female NPT
• ASME Flanged: 125#, 150#, 250#, 300#, 600#
• DIN Flanged: PN16, PN25, PN40
  • (Integral Flanged Body unless listed under Opt.-30)
• Opt-31: British Standard Pipe Threads
• Opt-34: 14" Face to Face Flange Dimension

Material Combinations: Body / Cover Dome

• DI/DI
• BRZ/BRZ
• SST/DI
• CS/DI
• BRZ/DI
• SST/CS
• CS/CS
• SST/SST

DI = Ductile Iron
CS = Carbon Steel
BRZ = Bronze
SST = Stainless Steel

Features

• Versatile: Five basic materials and multiple trim material combinations to select from. Multiple methods of pressure loading.
• Tight Shutoff: Multiple composition materials provide Class IV or VI inboard leakage rates. Designed as a soft-seated valve.
• Capacity: Highest in the industry. Allows smaller body sizes than competitors in majority of applications.
• Droop: Highly accurate outlet pressure control, due to absence of range spring in design, provides almost zero “droop effect”.
• Trim Design: FTO and pressure balancing allows for higher inlet pressure. Results in unmatched sensitivity and stability. Internals are cage-contained within easily removable quick change trim.
• Rangeability: Basic valve gives outstanding rangeability due to close tolerances, balanced trim, and a broad range of elastomeric and metallic diaphragms and soft seats. Can be as high as 2000:1.
• Heavy-Duty Guiding: Both top and bottom guided to maintain stability and increased diaphragm life.
• Failure Position: Fails closed on loss of loading pressure.