---
product_id: 7916056
title: "Milton S-684-4 1/4\" MNPT Male Tank Valve, includes Protective Caps (Pack of 2)"
brand: "milton"
price: "87 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/7916056-milton-s-684-4-1-4-mnpt-male-tank-valve
store_origin: PL
region: Poland
---

# Prevents air leakage up to 200 PSI 1/4" MNPT male thread for secure fit Includes protective plastic caps Milton S-684-4 1/4" MNPT Male Tank Valve, includes Protective Caps (Pack of 2)

**Brand:** milton
**Price:** 87 zł
**Availability:** ✅ In Stock

## Summary

> 💨 Lock in your air, lock out the leaks — the pro’s choice for flawless inflation!

## Quick Answers

- **What is this?** Milton S-684-4 1/4" MNPT Male Tank Valve, includes Protective Caps (Pack of 2) by milton
- **How much does it cost?** 87 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/7916056-milton-s-684-4-1-4-mnpt-male-tank-valve)

## Best For

- milton enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Durable Design:** Brass construction with a sleek plastic cap offers long-lasting protection in a minimal 1.5" length.
- • **Trusted Legacy Since 1943:** Milton’s industry-leading quality trusted by pros across automotive, industrial, and heavy-duty sectors.
- • **Built to Withstand Pressure:** Rated for up to 200 PSI, this valve handles demanding air compressor tasks with ease.
- • **Precision Fit, Zero Air Loss:** 1/4" MNPT threading ensures airtight connection, eliminating costly leaks during inflation.
- • **Pack of 2 for Double Efficiency:** Two valves included to keep your workflow seamless and your tanks fully sealed.

## Overview

The Milton S-684-4 1/4" MNPT Male Tank Valve pack of 2 is engineered to prevent air leakage during vessel inflation, supporting pressures up to 200 PSI. Crafted from durable brass with protective plastic caps, these compact valves ensure a secure, airtight fit with standard 1/4" male national pipe threads. Trusted since 1943, Milton delivers professional-grade air accessories ideal for automotive, industrial, and heavy-duty applications.

## Description

Our Milton 1/4" MNPT tank valves are made to be used with an air compressor to prevent air from leaking out when filling vessels. A standard core valve and plastic cap are included giving the product an overall length of 1.5”. Do not exceed 200 PSI when using this tank valve.

## Features

- Prevents Air from Leaking: This handy tank valve helps prevent the loss of air when filling vessels with an air compressor
- Dimensions: Overall length including the plastic cap is 1.5”. The cap thread size is .305-32
- Maximum Air Pressure of 200 PSI: To ensure safe use of this tank valve, it is recommended that the air pressure be kept at a maximum of 200 PSI
- NPT: This tank valve has a 1/4" male national pipe thread
- #1 Source for Quality Air Accessories: Since 1943, Milton has been providing quality accessories to the Automotive, Industrial, Hardware, Agriculture, Heavy-Duty Fleet and MRO markets
- Milton is your number 1 source for Quality Air Accessories
- Since 1943 Milton has been producing Quality Air Accessories
- Milton covers automotive, industrial, hardware, agriculture, heavy-duty fleet and MRO markets

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Brass |
| Brand | Milton |
| Item dimensions L x W x H | 2 x 1 x 1 inches |
| Exterior Finish | Plastic |
| Inlet Connection Size | 0.25 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Outlet Connection Type | MNPT |
| Maximum Operating Pressure | 200 Pound per Square Inch |
| Number of Ports | 2 |
| Outlet Connection Size | 0.25 Inches |
| Specification Met | Meets general industry standards for air compressor tank valves |
| Global Trade Identification Number | 00030937400383 |
| Manufacturer | Milton |
| UPC | 031113196373 735090074302 069060287356 030937400383 |
| Part Number | S-684-4 |
| Item Weight | 0.8 ounces |
| Product Dimensions | 2 x 1 x 1 inches |
| Item model number | S-684-4 |
| Is Discontinued By Manufacturer | No |
| Size | Pack of 2 |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Number of Handles | 1 |
| Measurement System | Inch |
| Special Features | INCLUDES: Standard valve core and plastic cap. Overall length (with cap): 1.5 inch.- DESIGNED: For use with air compressor tanks to fill vessels with air.- IDEAL: Tank valve prevents air from leaking out while allowing for air to pass through for inflation.- NPT: 1/4" Male national pipe thread. Cap thread size: .305-32.- MAXIMUM AIR PRESSURE: 200 pounds per square inch (PSI).- - - - |
| Included Components | 1/4" MNPT Male Tank Valve |
| Batteries Included? | No |
| Batteries Required? | No |
| National Stock Number | 4820-01-443-1916 |

## Product Details

- **Material:** Brass
- **Brand:** Milton
- **Item dimensions L x W x H:** 2 x 1 x 1 inches
- **Exterior Finish:** Plastic
- **Inlet Connection Size:** 0.25 Inches
- **Inlet Connection Type:** National Pipe Tapered
- **Outlet Connection Type:** MNPT
- **Maximum Operating Pressure:** 200 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.25 Inches

## Images

![Milton S-684-4 1/4" MNPT Male Tank Valve, includes Protective Caps (Pack of 2) - Image 1](https://m.media-amazon.com/images/I/6136lcD4a-L.jpg)
![Milton S-684-4 1/4" MNPT Male Tank Valve, includes Protective Caps (Pack of 2) - Image 2](https://m.media-amazon.com/images/I/61KF15EFvKL.jpg)
![Milton S-684-4 1/4" MNPT Male Tank Valve, includes Protective Caps (Pack of 2) - Image 3](https://m.media-amazon.com/images/I/51GaYKKyIEL.jpg)
![Milton S-684-4 1/4" MNPT Male Tank Valve, includes Protective Caps (Pack of 2) - Image 4](https://m.media-amazon.com/images/I/61qR57kTUUL.jpg)
![Milton S-684-4 1/4" MNPT Male Tank Valve, includes Protective Caps (Pack of 2) - Image 5](https://m.media-amazon.com/images/I/71UWzrJbEFL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How big is the other side diameter?**
A: Shrader valve (same as bicycle and automotive tires)

**Q: 1/4" male on one end and shrader male on the the other end? Remove the core to make it a stright pass though for another 1/4 fitting? Works?**
A: If you mean to use it as a ¼" nipple, why would you?  Besides, the schrader end isn't ¼" NPT.

**Q: Why are these fittings made out of brass? Is pipe dope or teflon tape necessary on the threads?**
A: The rigidity of steel might allow it leak - brass is good - Teflon tape is small insurance- do it and move on !

**Q: Can i mount this on both ends of a venturi tube in my home irrigation system (sch40 pvc) to measure the water pressure drop?**
A: I suppose it would work. I guess u will tap the tube so u will get a tight connection.

## Frequently Bought Together

- Milton S-684-4 1/4" MNPT Male Tank Valve, includes Protective Caps (Pack of 2)
- Tire Deflator Kit Universal Adjustable Pack of 4 Automatic for Cars, Trucks

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-02-02*