What is a Check valve?
A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid to flow through it in only one direction.
Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave.
Check valve Suppliers In South Africa
LVSA GROUP – VALVE MANUFACTURER IN SOUTH AFRICA
Address: 46 Kindon Rd, Robertsham, Johannesburg, 2091, South Africa
Hours: Open ⋅ Closes 5 pm
Phone: +27 31 054 7650
Ultra Control Valves CC
Address: 31 Plantation Rd, Eastleigh, Edenvale, 1609, South Africa
Hours: Open now
Phone: +27 11 452 6514
AVK Valves Southern Africa
Address: 10 Chris St, Alrode, Alberton, 1451, South Africa
Hours: Open ⋅ Closes 4 pm
Phone: +27 11 908 3760
Sanspar Engineering Sales Pty Ltd – Industrial Valves Supplier – Butterfly Valves – Gate Valves
Address: 1 La Belle Rd, Stikland Industrial, Cape Town, 7530, South Africa
Areas served: Limpopo and nearby areas
Hours: Open ⋅ Closes 5 pm
Phone: +27 21 511 0283
Macneil Steel & Valves
Address: 1575 Staal Rd, Knights, Johannesburg, 1400, South Africa
Hours: Open now
Phone: +27 11 822 1802
Industrial Valve & Engineering Supplies Pty Ltd
Address: 114 Plane Rd, Spartan, Kempton Park, 1619, South Africa
Hours: Open ⋅ Closes 5 pm
Phone: +27 11 394 2066
Heaton Valves Africa
Address: Hughes Gauteng, 1459, South Africa
Hours: Open ⋅ Closes 5 pm
Phone: +27 11 418 4800
Valve Solutions Africa (PTY) LTD
Address: CX 48 Unit 24, Industrial Park, 8 Ossewa St, Choolorkop, Edenvale, 1619, South Africa
Hours: Open ⋅ Closes 5 pm
Phone: +27 82 416 4959
Kerr Valve & Industrial Supplies (Pty) Ltd
Address: 42 Heidelberg Road, Mooi St, Doornfontein 92-Ir, Johannesburg, 2001, South Africa
Hours: Open ⋅ Closes 4 pm
Phone: +27 11 334 2060
Ithuba Valves & Industrial Supplies
Address: Ext. 7, 8 Basalt St, Alrode, Alberton, 1450, South Africa
Hours: Open ⋅ Closes 4:30 pm
Phone: +27 11 864 2582
Which is the best check valve?
Ball check valves
Advantages are their compactness and the fact that they have no external parts which helps keeping the price low and the reliability high.
How much is a check valve In South Africa?
Check Valve Price in South Africa (CIF) – 2022
| Years | Average |
|---|---|
| 2019 | 12,277 |
| 2020 | 10,593 |
| 2021 | 10,965 |
| 2022 | 11,472 |
How to Calculate Valve Size
In order to properly size a check valve, you must have a viscosity of the material, media, pressure, temperature, and flow rate (defined as the number of US gallons of water per minute at 60°F that will flow through the valve with a pressure drop of 1 psi) to be able to customize a center-guided check valve to the application – this involves changing the distance the disc travels from the closed to the full open position.
When the valve’s disc is stable and fully open or closed against the seat, no fluttering, chattering, or excessive vibration will occur.
What is the standard size of valve?
Types of valves and their typical operating sizes.
| Type of Valve | Minimum Size | Maximum Size |
|---|---|---|
| mm | inches | |
| Globe | 3 | 30 |
| Plug Lubricated | 6 | 30 |
| Plug non lubricated | 6 | 16 |
How many check valves do you need?
You just need a good check valve, and to start and stop the pump at “almost” deadhead pressure conditions.
The only check valve you should have on a submersible pump system is the one on the pump itself. Another check valve anywhere else can cause a vacuum or negative pressure before the second check valve.