The Order of Valve Installation

10/17/2017

When reading NFPA 13 Handbook, 8.16.1.1. The figure shows several layout of valves installation. My question is what is the order to install the valves. Wet system figure shows control valve, then check valve; however the dry pipe system shows check valve first then control valve. So what is the right order to install valves? Or it doesn't matter as long as you have control and check valve?

Note: This is a Daily Discussion question submitted to us. Submit a Question or discuss this by clicking the title above.

1 Comment

Joe

11/2/2017 06:29:19 am

Functionally I don't believe the order will impact the system. It could be useful to have the isolation valve first, then any other devices downstream of the valve in case of maintenance or inspection.

For instance, if for some reason the check valve would need to be replaced it could with only shutdown of that system by the isolation valve you've provided. If the check valve is upstream of the valve, you may have to shut down large portions of the building in order to replace or inspect just that check valve.

Just my thoughts, I'd be interested if anyone else has a take on it.

Free Signup

Subscribe for posts on PE Problems and Daily Discussions, straight to your inbox, for free:

Community

Thank You to Our Top December 2018 Contributors:

1. ZS
2. Mike
3. Wayne A.
4. Raul V.
5. Dave L.

6. Franck
7. David C.
8. William
9. Kyle
10. Khaja A.

Your Post

Ask your question here (members area)

Search

All-Access

Get all-access to the downloadable Toolkit, Sprinkler Database, Ask-A-Question and more.

ALL-ACCESS

Filters

Exam Prep

2018 PE Prep Guide

Weekly Practice Exams

PE Problems

Visit July-October for daily Fire Protection PE Exam sample questions.

Solutions are posted the day after posting.

Comment with your solutions, questions or clarifications.

Please note that questions posted are unofficial and in accordance with NCEES rules are intended to be similar to actual exam questions, not actual exam questions themselves.

RSS Feed

Home - About - Blog - Contact - Exam Prep - Store

Copyright © 2018 MeyerFire, LLC
The views, opinions, and information found on this site represent solely the author shown and do not represent the opinions of any other party, nor does the presented material assume responsibility for its use. Fire protection and life safety systems constitute a critical component for public health and safety and you should consult with a licensed professional for proper design and code adherence. Some (not all) outbound links on this website, such as Amazon links, are affiliate-based where we receive a commission for orders placed elsewhere.