---
product_id: 437945858
title: "Joywayus Brass Check Valve 3/4\" NPT Thread Female One Way Backflow Preventer Check Valves with Brass Float(Pack of 2)"
price: "₨29738"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/437945858-joywayus-brass-check-valve-3-4-npt-thread-female-one
store_origin: LK
region: Sri Lanka
---

# Joywayus Brass Check Valve 3/4" NPT Thread Female One Way Backflow Preventer Check Valves with Brass Float(Pack of 2)

**Price:** ₨29738
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Joywayus Brass Check Valve 3/4" NPT Thread Female One Way Backflow Preventer Check Valves with Brass Float(Pack of 2)
- **How much does it cost?** ₨29738 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/437945858-joywayus-brass-check-valve-3-4-npt-thread-female-one)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Joywayus Brass Check Valve 3/4" NPT Thread Female One Way Backflow Preventer Check Valves with Brass Float(Pack of 2)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Brass |
| Brand | Joywayus |
| Exterior Finish | Stainless Steel |
| Inlet Connection Size | 0.75 Inches |
| Inlet Connection Type | threaded |
| Outlet Connection Type | NPT |
| Maximum Operating Pressure | 2E+2 Pound per Square Inch |
| Number of Ports | 2 |
| Outlet Connection Size | 0.75 Inches |
| Manufacturer | Joywayus |
| Part Number | 7QQ-FER-20420 |
| Item Weight | 10.5 ounces |
| Package Dimensions | 3.27 x 2.6 x 1.57 inches |
| Item model number | 7QQ-FER-20420 |
| Size | 3/4" Female |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Brass
- **Brand:** Joywayus
- **Exterior Finish:** Stainless Steel
- **Inlet Connection Size:** 0.75 Inches
- **Inlet Connection Type:** threaded
- **Outlet Connection Type:** NPT
- **Maximum Operating Pressure:** 2E+2 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.75 Inches
- **Manufacturer:** Joywayus

## Images

![Joywayus Brass Check Valve 3/4" NPT Thread Female One Way Backflow Preventer Check Valves with Brass Float(Pack of 2) - Image 1](https://m.media-amazon.com/images/I/61axLKU8AmL.jpg)

## Questions & Answers

**Q: which is the opening psi?**
A: There is a spring inside the check valve, so there is no definite opening pressure. The approximate working pressure is 5PSI-200PSI.

**Q: where do I find parts for submersible well pump like the middle ring that connect the motor part and the top part**
A: Not sure which part you are needing or pump you have,, but contact the manufacturer for local parts locations. I have a lot of luck that way.

**Q: Do these have a garden hose thread? otherwise known as ght for a standard hose.**
A: No.  It has a 3/4" NPT thread, which is not the same as the 3/4" GHT.  You might find an adapter by searching for 3/4" npt to 3/4" ght adapter and still be able to use the valve.

**Q: Will this work with compressed air? Description says it works with gas but does not clarify if they mean gas elements or gasoline.**
A: I think that they most likely would work with air since they are spring loaded. Gasoline I don't know if the plastics are compatible or not.

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**Shop now:** [https://www.desertcart.lk/products/437945858-joywayus-brass-check-valve-3-4-npt-thread-female-one](https://www.desertcart.lk/products/437945858-joywayus-brass-check-valve-3-4-npt-thread-female-one)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-21*