

💧 Keep your water flowing forward—no leaks, no worries!
The John Guest Push Fit Single Check Valve 12mm is a compact, brass non-return valve designed for easy push-fit installation. It ensures one-way water flow, preventing backflow in water heating systems. Lightweight and durable, it’s a top-rated choice trusted by professionals for leak-free performance and long-lasting reliability.
| ASIN | B0BX6GPBDQ |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 4,789 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 1 in Check Valves |
| Colour | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (59) |
| Date First Available | 1 Mar. 2023 |
| Included Components | 1 Single Check Valve |
| Item Weight | 20 g |
| Item model number | 12SCV |
| Manufacturer | John Guest |
| Material | Brass |
| Number of Pieces | 1 |
| Product Dimensions | 2.3 x 2.3 x 6.9 cm; 20 g |
| Size | Klein |
T**S
Quality you expect from JG Speedfit
Great quality item. Easy to fit, no leaks in my camper pressurised water system.
M**S
Does what it’s supposed to
Does exactly what it’s supposed to do. Easy to use and works well
K**N
Great quality.
Great quality, perfect for what we required in our campervan conversion. Solar panels now up and running.
I**N
Easy to use
Easy hl use
R**.
Expensive, you pay for the name.
Do exactly what they are designed to do but you pay for the John Guest name. There are alternatives out there but I needed these in a hurry so couldn't wait the extra few days for them to arrive. Expensive but functional.
A**E
Easy installation
Quick and easy to fit. Works as described.
N**K
It fits
Did what it’s supposed to do
L**I
Ottimo prodotto
E**A
Utilizzata per l’ impianto idraulico del camper e devo dire che non ha mai dato problemi, consigliato
G**O
Soddisfatto del prodotto perché facile da installare e soprattutto perché funziona benissimo.
S**N
Il prodotto è di ottima qualità, pertanto, secondo il mio parere il prezzo è adeguato alla qualità.
Trustpilot
4 days ago
2 days ago