---
product_id: 142421187
title: "Inline Poppet Check Valve 685 Series PP 1/2 FPT - BUNA"
brand: "smc"
price: "B/.58"
currency: PAB
in_stock: true
reviews_count: 8
category: "Smc"
url: https://www.desertcart.com.pa/products/142421187-inline-poppet-check-valve-685-series-pp-1-2-fpt
store_origin: PA
region: Panama
---

# Inline Poppet Check Valve 685 Series PP 1/2 FPT - BUNA

**Brand:** smc
**Price:** B/.58
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Inline Poppet Check Valve 685 Series PP 1/2 FPT - BUNA by smc
- **How much does it cost?** B/.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/142421187-inline-poppet-check-valve-685-series-pp-1-2-fpt)

## Best For

- smc enthusiasts

## Why This Product

- Trusted smc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Inline Poppet Check Valve 685 Series PP 1/2 FPT - BUNA 6850090. The 685 Series Inline Poppet Check Valve 1/2 FPT: The 685 Series Inline Poppet Check Valve 1/2 FPT: The 685 Series Poppet Check Valve Prevents reverse flow and incorporates a thin elastomer disc supported by a poppet that seals on the seat. Pressure in the flow direction moves the seal off the seat first before pressure builds enough to move the poppet away from the seat. The 685 Series Check Valve maximum operating pressure of 125 psi covers a wide range of air and fluid applications. The 685 Check is a compact design with a light cracking pressure high flow rate and a positive seal at very low back pressure or slight vacuum. For higher cracking pressure applications an embedded o-ring poppet is substituted for the standard elastomer disc poppet. Material Polypropylene Body & Poppet Black. Custom order: White Seal Buna-N. Custom order: Ethylene Propylene or Fluoroelastomer (Viton) Inlet x Outlet 1/2 Female NPT X 1/2 Female NPT 1/2 Female NPT x 1/2 Male NPT 1/2 Male NPT x 1/2 Female NPT 1/2 Male NPT x 1/2 Male NPT Cracking Pressure 302 Stainless Spring @ 1/3 psi. Custom order:1 3 7 psi or Hastelloy Spring @ 1/3 1 3 psi. 685 Series FP CHK 685-8F8F-B Check Valves check valve inline check valve female check valve female threaded check valve smc BUNA check valve PVC check valve 685 series check valve

Review: Work good - They just work like they should
Review: Keeps my chemical lines from contaminating each other - Soft Wash Setup - Works perfectly with my soft wash setup. Keeps my liquid and chemical lines from contaminating each other. It has a strong build compared to pvc check valves. Better price than most online sellers after figuring their shipping rates, and shipping time was faster.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005VPM2AA |
| Best Sellers Rank | #33,058 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #35 in Check Valves |
| Brand | SMC |
| Brand Name | SMC |
| Customer Reviews | 4.6 out of 5 stars 178 Reviews |
| Exterior Finish | Polypropylene |
| Inlet Connection Size | 0.5 inches |
| Inlet Connection Type | threaded |
| Item Dimensions | 3.46 x 2.48 x 1.77 inches |
| Item Weight | 1.12 ounces |
| Item dimensions L x W x H | 3.46 x 2.48 x 1.77 inches |
| Manufacturer | SMC |
| Manufacturer Part Number | 685 Series |
| Material | Plastic |
| Material Type | Plastic |
| Maximum Operating Pressure | 125 psi |
| Model Number | 685 Series |
| Number of Items | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.5 inches |
| Outlet Connection Type | MNPT |
| Size | 1/2 inches |
| Specification Met | ASME B16.34 |
| Thread Size | 1/2 inches |
| Thread Type | NPT |
| Unit Count | 1 Count |
| Valve Type | Check Valve |

## Product Details

- **Brand:** SMC
- **Exterior Finish:** Polypropylene
- **Inlet Connection Size:** 0.5 Inches
- **Inlet Connection Type:** threaded
- **Item dimensions L x W x H:** 3.46 x 2.48 x 1.77 inches
- **Material:** Polypropylene (PP)
- **Maximum Operating Pressure:** 125 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.5 Inches
- **Outlet Connection Type:** MNPT

## Images

![Inline Poppet Check Valve 685 Series PP 1/2 FPT - BUNA - Image 1](https://m.media-amazon.com/images/I/61of00AexuL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Work good
*by M***K on August 12, 2026*

They just work like they should

### ⭐⭐⭐⭐⭐ Keeps my chemical lines from contaminating each other - Soft Wash Setup
*by B***N on July 16, 2026*

Works perfectly with my soft wash setup. Keeps my liquid and chemical lines from contaminating each other. It has a strong build compared to pvc check valves. Better price than most online sellers after figuring their shipping rates, and shipping time was faster.

### ⭐⭐⭐⭐⭐ Low cracking pressure
*by C***E on July 21, 2026*

I needed a low pressure valve for a Windmill project. Everything else I tried had too much resistance. These open (crack) and very low pressure.

## Frequently Bought Together

- Inline Poppet Check Valve 685 Series PP 1/2 FPT - BUNA
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**Shop now:** [https://www.desertcart.com.pa/products/142421187-inline-poppet-check-valve-685-series-pp-1-2-fpt](https://www.desertcart.com.pa/products/142421187-inline-poppet-check-valve-685-series-pp-1-2-fpt)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-10-31*