I'm looking for a spring material (preferably alloy steel) that could withstand operations in temperatures as high as 1200 deg F . Can anyone suggest a material please ?
I couldn't find the clause that mandates the use of open bonnet in Section I boiler safety valves . Is it inferred somewhere else ? All that I could find is PG-68.6 which is for Superheater/Reheater valves btw
A customer asked me to stamp the PSV nameplate at 1000 psig , but set the valve at 1030 psig . The PSV should be stamped UV . Does BPVC VIII allow such practice ? The customer points that the code allows 3% tolerance on set pressure , so he demands setting the valve at upper limit . In our...
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I'm recently involved in providing technology service to a firm that manufactures small wind turbines . There is a requirement to certify their new proposed wind turbine per DNV / IEC standards . I've been requested to provide CAE analysis of turbine rotor blade which is a part of the...
I'm looking for an authentic source for the mechanical properties of S41600 Cond T , I couldn't find them in ASME B&PVC Section II d , and in ASTM A582 either . Where else can I get this information ?
I am designing a bolting for Body-Bonnet connection of my valve . It is a BPVC Section I valve . I have two material options i) A193 - B16 ii) SB637 -Inconel 718 . I'm calculating the thread shear (stripping) stress and tensile stress to valuate my bolting . If I compare these with allowable...
I'm looking towards using the existing pipe flange for my new valve, But my new valve has more outlet pressure than the previous one . According to specification it needs 900# flange whereas my existing piping has only 600# . How can I check if I can use this same existing flange ? Service...
Are there any manufacturers who can build extremely large springs in the US ? I'm looking for a spring that has a spring rate around 50000 lb/in and stroke of 3 inches , wire diameter around 3.88 inches .
I'm designing a helical coil compression spring . The spring has to be preset to the final free length . Which correction factor should I use for after set removed condition ? Is it Wahl's that considers both curvature and direct shear or just the direct shear
What is the correct method to...
Hi
Is it possible to estimate the pressure at the outlet of a Safety Valve at discharge using the Upstream data . For Example : A safety valve discharging steam at Set pressure 1000 psig and relieving Temperature 650 F , what will be the back pressure at the outlet ?
