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Just after some feedback on this valves raised face......... the black was applied to show up the finish a little better. My question is simple. Acceptable or not, and if not... why not? Cheers

Hi guys, ASME B16.5 mentions that a flange face should have a certain roughness and be spiral or concentrically machined. We have received some valves that AREN'T spiral or concentrically machined but probably do have the required roughness. They we machined using a milling machine and to me...

Can anyone tell me if a bellows PSV with a vent pipe is classed as an OPEN or CLOSED bonnet valve? Kind regards

Hi Guys, We have a few Bellows PSV's landed here in the workshop. The paperwork says they are a closed bonnet, but the have the vent pipe from the bonnet. Does that not make them an open bonnet? Thanks

Hi Guys, i have been scratching my head for some time now with regards to the raised face height specs given in ASME B16.5, notable section 7.3 for facings. It mentions a number of metric sizes and also gives an imperial conversion. EXCEPT, the conversation they give isn't correct. For instance...

Hi Guys, I've been asked to source some lint free cloths for oxygen cleaning valve parts. My usual tool supplier has come back and told me that there isn't anything that is totally lint free. Anybody any advice or can recommend a product to do the job? Thanks

Hi Guys, A client of ours wishes to have us glue test tags to their valves. Has anyone any recommendations on the type of glue that would suit best. They will be outdoors in hot sun. Thanks

Hi Guys, just came across a 16" Class 600 expanding gate valve, and there doesn't appear to be much gramophone face on there at all. Maybe it was never very deep, i don't know. But the finish on the face is certainly not to the specs i have. My drawings specify 45 - 50 serrations per inch. Are...

Hi Guys, we have an SRI ball valve in our workshop and we're having a hell of a job getting it to pass the seat test. The seats are not spring loaded onto the ball. How can we get the seat to move over and seal on the ball? The seat is relatively free within its pocket, but it has an 'o' ring...

Hi Guys, Currently got half a dozen 16" Class 600 Swing check valves on the workshop floor. End to end dimensions are under spec and wondered what the options are. Is it possible to weld the flange and raised face to bring it back into spec? Photo attached Cheers

Hi Guys, Looking to design something to keep valves secure whilst stripping and working on. currently got a couple of 20" gate valves on the floor and they are a good 8 feet tall. Also got a number of 16" Check valves to work on an repair. Anyone got any photo's or drawings they'd be...

Hi guys, Just got an 8" class 300 gate valve landed. No manaufacturers tag or info on the valve apart from one cast logo. Google hasn't helped much and i'd like to find some infor on the valve from a manufacturers website. does anyone recognise the logo and can tell me who the...

just wondering what methods are open to us to lap a 10" Rockwell Hypre-seal plug valve. Is the extremely labour intensive option of doing it by hand still the recognised way forward, or are we using machines these days? I'd love to knock something up myself to do the job, something that would...

Hi guys, just wondering if its ok to test a class 2500 plug valve with an RTJ design flange using a blind flange with an "O" ring groove machined in to give us the seal. Thanks

Hi Guys, first post, so be gentle with me :-) I need to come up with a way of transporting freshly tested PSV's to site. They will be on the back of a truck and the roads will be rough. It is currently the clients procedure not to transport tested PSV's, but to test them at their...

hi guys, wondering if any of you can point me in the direction of some info regarding test rig design. I'm considering setting up in business and need a test rig for small "kunkle" type safety valves. I am a capable engineer and have been working in a valve shop for two years but it has now...

hi guys, wondering if any of you can point me in the direction of some info regarding test rig design. I'm considering setting up in business and need a test rig for small "kunkle" type safety valves. I am a capable engineer and have been working in a valve shop for two years but it has now...