SI Style Straight-Sided Insert Check Valve - 1-1/4 in Nominal Size, 0.125 psi Standard Cracking Pressure
SI Style Straight-Sided Insert Check Valve - 1-1/4 in Nominal Size, 0.125 psi Standard Cracking Pressure
SKU:SIS-b069b3
Premium SI Style Straight-Sided Insert Check Valve - Durable, Threadless Design, 0.125 psi Cracking Pressure
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$129.99
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SI Style Straight-Sided Insert Check Valve - 1-1/4 in Nominal Size, 0.125 psi Standard Cracking Pressure
$129.99
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SI Style Straight-Sided Insert Check Valve - 1-1/4 in Nominal Size, 0.125 psi Standard Cracking Pressure
$129.99
Quantity: 1
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The SI Style Straight-Sided Insert Check Valve offers a threadless design ideal for seamless integration into applications requiring a check valve without threads. Crafted with high-quality 316 Stainless Steel, this valve ensures durability and reliability. It features a standard cracking pressure of 0.125 psi and is versatile enough to function as a low pressure relief valve or vacuum breaker. With options for various body and seat materials, non-shock pressure ratings at 3000 psig, and certifications like ISO 9001, this valve is engineered to meet stringent industry standards for quality and performance.
Product Specifications
Additional Information
PED Compliance Statement: Due to the unique "insert" design of our 3S, SC, CB, TC, SI, & UV, style check valves, they do not constitute an "identifiable pressure bearing housing" as defined in PED Guideline 1/8. These styles must be installed into either ferrules or fittings to create a pressure bearing housing. Instead, they are classified as "components of pressure equipment" as defined in PED Guideline 1/8. As a result, these valves can be sold in the European Community and no CE Mark is required.In addition applications where the maximum allowed operating pressure is 0.5 bar (7.2 psi) or less, do not fall under the PED, regardless of the valve style.
Note
Made in USA.
Specifications Body Material
316 Stainless Steel = SS | Alloy 20 = A2 | Alloy B = HB | Alloy C-276 = HC | Brass = BR | Carbon Steel = CS | Monel® 400 or Alloy R405 = MO | Titanium = TI
Specifications Body Material Availability
316 Stainless Steel (SS) - Standard | Alloy 20 (A2) - Semi-Standard | Alloy B (HB) - Contact the factory for these or other materials. | Alloy C-276 (HC) - Semi-Standard | Brass (BR) - Standard | Carbon Steel (CS) - Standard | Monel® 400 or Alloy R405 - Semi-Standard | Titanium (TI) - Contact the factory for these or other materials.
Specifications Certifications
European Conformity (CE) Non-PED Statement | International Organization for Standardization (ISO 9001) Certified
Specifications Nominal Pipe Size
1-1/4 in
Specifications Non Shock Pressure Rating At 100 Degree Fahrenhei
3000 psig
Specifications Note For Material
Listed above are the most common material selections. Please contact the factory for additional options.
Specifications Note For Standard Cracking Pressure
0.125 psi springs are not recommended for installations with flow vertical down.
Specifications Seat Material
"Metal-to-Metal" = MT | Aflas® = AS | Buna-N = BN | Ethylene Propylene Diene Monomer (EPDM) = EP (EP seats not recommended for use with Carbon Steel valves.) | Fluoro-Elastomer (FKM) = VT | Neoprene = NE | Perfluoroelastomer = KZ | Polytetrafluoroethylene (PTFE) = TF
Specifications Size Code
I
Specifications Special Options
T = FEP Encapsulated Spring (Contact the factory for more options)
Specifications Spring Material
17-7PH Stainless Steel = PH | 316 Stainless Steel = SS | Alloy C-276 = HC | Inconel® X750 or Alloy X750 = IX | Monel® 400 = MO | Titanium = TI
Specifications Standard Cracking Pressure
0.125 psi
Specifications Valve Style
SI