HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

Does the pump outlet need to be vented?

2009-04-06View Original

Thread Content

Is it normal to install an exhaust valve at the pump outlet?
Reply #22009-04-06
I really don’t know how to wait humbly for the answer
Reply #32009-04-06
Generally, an exhaust valve is installed at the inlet of the pump and a vent valve is installed at the outlet.
Reply #42009-04-06
According to relevant specifications, an exhaust (or vent) valve should generally be installed in front of the pump.
Reply #52009-04-06
Both inlets and outlets must be vented. The inlet is for venting steam when the oil is being introduced, and the outlet is for draining condensation when the oil is not being measured.
Reply #62009-04-06
Generally, the high position is emptied and the low position is purged. I don't think it needs to be added.
Reply #72009-04-06
It also makes sense to add a vent valve.
Reply #82009-04-06
Add an exhaust valve at the inlet of the pump and a vent valve at the outlet. Some pumps for special purposes come with their own
Reply #92009-04-06
There are usually vent valves and drain valves. The vent valve can be used to purge the pump pipeline and the overpressure relief and condensate valve is used to discharge water before using the pump to prevent water hammer and other phenomena.
Reply #102009-04-06
No need to add, add exhaust at the inlet and backflow at the outlet
Reply #112009-04-06
The pump outlet generally does not have an exhaust valve but a vent valve.
Reply #122009-04-06
You are referring to the outlet exhaust valve, which must be added. It needs to be opened before starting the pump!
Reply #132009-04-06
An exhaust valve should be added to the outlet of the pump. Before starting the centrifugal pump, the pump should be filled and exhausted to prevent gas binding. The motor can only be started after the non-condensable gas has been discharged.
Reply #142009-04-06
It needs to be added, but some pumps have their own exhaust valves on the pump body, so there is no need to add it. In practical applications, there is no problem if it is not added in various places. If the pump is installed in a lower position and there is no air trapped in the pump casing, it can be unsafe.
Reply #152009-04-06
If necessary, add a drain valve to the inlet and a vent valve to the outlet.
Reply #162009-04-06
It depends on the structure of the pump. For example, the outlet of a centrifugal pump does not need to be added, but a plunger pump does.
Reply #172009-04-06
In most cases, the pump inlet is drained and the pump outlet is vented. For special circumstances, some pump outlets are not vented. The purpose of venting the pump outlet is to prime the pump.
Reply #182009-04-06
Of course it is necessary, otherwise how can the air be purified?
Reply #192009-04-06
According to the requirements, there is a purge valve in front of the pump and a vent pump behind the pump. The vent is mainly for exhaust in the pump body.
Reply #202009-04-06
The outlet generally does not require an intermediate pipe. If there is a high point, an exhaust valve must be added.

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.