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Relief Valves — Proportional Relief Valves, R3, R4, RL3, and RL4 Series

Valves available with these specifications:

  • 1/4 to 1/2 in. (6 to 12 mm)
  • –65°F (–53°C) to 850°F (454°C)
  • 316 stainless steel
  • 225 psig (15.5 bar) to 6000 psig (413 bar)

Your local authorized Swagelok sales and service center may have additional options.

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Safe Product Selection

The complete catalog contents must be reviewed to ensure that the system designer and user make a safe product selection. When selecting products, the total system design must be considered to ensure safe, trouble-free performance. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and user.

⚠ Warning: Do not mix/interchange Swagelok two-ferrule tube-fitting end connection components (or other products not governed by industrial design standards) with those of other manufacturers.

  • 卸荷阀 — 比例卸荷阀，R3、R4、RL3 和 RL4 系列 — 高压卸荷阀

    卸荷阀 — 比例卸荷阀，R3、R4、RL3 和 RL4 系列 — 高压卸荷阀
    Your local authorized Swagelok sales and service center may have additional options.
    Contact Us
    Part #
    Body Material
    Connection 1 Size
    Connection 1 Type
    Connection 2 Size
    Connection 2 Type

  • 卸荷阀 — 比例卸荷阀，R3、R4、RL3 和 RL4 系列 — 可调节卸荷阀

    卸荷阀 — 比例卸荷阀，R3、R4、RL3 和 RL4 系列 — 可调节卸荷阀
    Your local authorized Swagelok sales and service center may have additional options.
    Contact Us
    Part #
    Body Material
    Connection 1 Size
    Connection 1 Type
    Connection 2 Size
    Connection 2 Type

  • 卸荷阀 — 比例卸荷阀，R3、R4、RL3 和 RL4 系列 — 低压卸荷阀

    卸荷阀 — 比例卸荷阀，R3、R4、RL3 和 RL4 系列 — 低压卸荷阀
    Your local authorized Swagelok sales and service center may have additional options.
    Contact Us
    Part #
    Body Material
    Connection 1 Size
    Connection 1 Type
    Connection 2 Size
    Connection 2 Type
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