A pressure relief valve is essentially a globe valve with an adjustable what?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the Washington State WDM 1 with flashcards, multiple choice questions, hints, and explanations. Get exam ready now!

Multiple Choice

A pressure relief valve is essentially a globe valve with an adjustable what?

Explanation:
A pressure relief valve opens when the system pressure reaches the force holding the valve closed, which is provided by a spring in a globe-style valve. The adjustable element is that spring—its preload is changed (typically with a screw) to set the cracking or set pressure. When the process pressure equals the spring force, the valve opens to relieve excess pressure. A diaphragm is used in some other valve types, but not as the adjustable component in the classic globe-style PRV. Bolts or levers don’t determine the setpoint in this design.

A pressure relief valve opens when the system pressure reaches the force holding the valve closed, which is provided by a spring in a globe-style valve. The adjustable element is that spring—its preload is changed (typically with a screw) to set the cracking or set pressure. When the process pressure equals the spring force, the valve opens to relieve excess pressure. A diaphragm is used in some other valve types, but not as the adjustable component in the classic globe-style PRV. Bolts or levers don’t determine the setpoint in this design.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy