1/2" Nominal Pipe Size SI Straight-Sided Insert Check Valve
1/2" Nominal Pipe Size SI Straight-Sided Insert Check Valve
SKU:SIS-411ae1
Versatile 1/2" SI Check Valve with 0.125 psi cracking pressure & CE/ISO 9001 compliance
Regular price
$89.99
Regular price
Sale price
$89.99
Unit price
per
Initiate Order
1/2" Nominal Pipe Size SI Straight-Sided Insert Check Valve
$89.99
Quantity: 1
Claim Your Seller Account
1/2" Nominal Pipe Size SI Straight-Sided Insert Check Valve
$89.99
Quantity: 1
Delivery via Maden
Expect your order to arrive on time.
Secure Payments
All orders are processed through a secure, PCI-compliant checkout.
The 1/2" Nominal Pipe Size SI Straight-Sided Insert Check Valve offers a versatile and threadless design suitable for various applications, providing a standard cracking pressure of 0.125 psi. Made in the USA, this valve features options for body and seat materials, non-shock pressure ratings up to 3000 psig, and compliance with European Conformity (CE) and ISO 9001 standards. With special options like FEP Encapsulated Spring, this valve is a reliable choice for low-pressure relief or vacuum breaker needs.
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
1/2 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
D
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