SI Straight Sided Insert Valve

Brand: Check-All Valve Manufacturing Company

The Straight Sided Insert (SI) is a threadless check valve designed to be inserted into any cavity where a check valve is needed and threads are not desired.

Consult the factory if your application requires tolerancing for a press fit installation. The SI valve can also be used as a low pressure relief valve or vacuum breaker by using the desired spring settings.

Specifications

Approvals & Certifications

  • ISO 9001

Approvals & Certifications

  • CE

Diameter

  • Orifice: 0.348” to 1.385” (8.63 to 35.05 mm)

Enclosure, Body Material

  • 316 Stainless Steel
  • Alloy 20 or Incoloy
  • Alloy 400 or Monel
  • Alloy B
  • Alloy C-276 or Hastelloy
  • Brass
  • Carbon Steel
  • Titanium

Flow Rate

  • 2.4 to 32 Cv

Media

  • Water

Pipe Size

  • 1/2” to 2” (12.7 to 50.8 mm)

Pressure Range

  • Non-Shock Pressure-Temperature Rating - psig: 3,000 (kPa: 20,680, bar: 206.8) at 37.7° C (100° F)

Seat / Seal Material

  • Seat: AFLAS
  • Seat: Buna-N
  • Seat: EPDM
  • Seat: Kalrez
  • Seat: Metal to Metal
  • Seat: Neoprene
  • Seat: PTFE
  • Seat: Viton

Spring Material

  • 316 Stainless Steel
  • AISI 631 Stainless Steel, 17-7 PH
  • Alloy 400 or Monel
  • Alloy C-276 or Hastelloy
  • Alloy X-750 (Inconel)
  • Fluorinated Ethylene Propylene (FEP)
  • Titanium

Tolerance

  • Spring Tolerance: ± 15 %

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