Exam Question
(a) Explain with the help of diagrams the difference between screw-lift valve, a Screw-down non-return valve and a non-return valve. (10)
(b) Describe main features of a quick-closing valve with the help of a diagram. (6)
Class 4 (4th Engineer)
MEKG
📅 Jan 2023
Reference Answer
### Part (a): Comparison of Valve Types (10 Marks)
This section explains the fundamental differences in construction, operation, and application between a screw-lift valve, a screw-down non-return valve, and a non-return valve.
#### 1. Screw-Lift Valve (Globe Valve)
A screw-lift valve is designed for both isolation (shut-off) and regulation (throttling) of fluid flow.
This section explains the fundamental differences in construction, operation, and application between a screw-lift valve, a screw-down non-return valve, and a non-return valve.
#### 1. Screw-Lift Valve (Globe Valve)
A screw-lift valve is designed for both isolation (shut-off) and regulation (throttling) of fluid flow.
Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.
Prepare on Android — MeoMock on Google Play