RE: discharge valve of pumps

From: <Wu>
Date: Mon Oct 17 2005 - 11:42:00 EDT

If it is a reciprocating pump, both suction and discharge valve are close when the pump is not operated, unless you have other devices to control the valve open and close.

Sam Wu
Applications/R & D Engineer
National Oilwell
Houston, TX

-----Original Message-----
From: PipingDesign@yahoogroups.com [mailto:PipingDesign@yahoogroups.com] On Behalf Of VIJAYAN PULIKKATH
Sent: Monday, October 17, 2005 12:21 AM
To: PipingDesign@yahoogroups.com
Subject: [PipingDesign] discharge valve of pumps

From: Vijayan Pulikkath
Location: Consultants, Chennai, India
Asst Design Engr

1. Which is the natural position for a discharge valve of a pump when the pump is started?

    valve open
    valve closed
2) Reason?

3) Is it normal to have an interlock for pump start/stop with the discharge valve when they are operating in parallel and on auto standby? Is it essential?

Vijayan

---

  Yahoo! Music Unlimited - Access over 1 million songs. Try it free.

[Non-text portions of this message have been removed]

---

PipingOffice - Excel Spreadsheets for Piping Calculations http://www.pipingoffice.us/

---

Main site: http://www.pipingdesign.com

Yahoo! Groups Links Received on Mon Oct 17 11:42:00 2005