---
product_id: 45473125
title: "NG-250-PPR Marquest Scientific Polypropylene Needle Valve, 1/4\" Fem NPT x 1/4\" Fem NPT, PTFE Seals"
brand: "throttle master"
price: "B/.231"
currency: PAB
in_stock: true
category: "Throttle Master"
url: https://www.desertcart.com.pa/products/45473125-ng-250-ppr-marquest-scientific-polypropylene-needle-valve-1-4
store_origin: PA
region: Panama
---

# integral panel mount, no fasteners 20% finer metering control bubble-tight, corrosion-free seal NG-250-PPR Marquest Scientific Polypropylene Needle Valve, 1/4" Fem NPT x 1/4" Fem NPT, PTFE Seals

**Brand:** throttle master
**Price:** B/.231
**Availability:** ✅ In Stock

## Summary

> ⚙️ Control Flow Like a Pro, Seal with Confidence!

## Quick Answers

- **What is this?** NG-250-PPR Marquest Scientific Polypropylene Needle Valve, 1/4" Fem NPT x 1/4" Fem NPT, PTFE Seals by throttle master
- **How much does it cost?** B/.231 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/45473125-ng-250-ppr-marquest-scientific-polypropylene-needle-valve-1-4)

## Best For

- throttle master enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Rugged all-injection molded polypropylene design with PTFE seals ensures zero corrosion and contamination—engineered for long-term reliability.
- • **Bubble-Tight Shutoff:** Low torque needle finish guarantees leak-proof performance every time—no elastomers or lubricants needed for pure, clean operation.
- • **Precision Flow Mastery:** Experience ultra-smooth, 24 pitch metering threads for 20% finer control—dial in your flow with surgical accuracy.
- • **Effortless Installation:** Innovative integrally designed panel mounting requires no fasteners and fits panels from 1/16" to 1/2" thick—streamline your setup.
- • **Industrial-Grade Versatility:** 1/4" Female NPT inlet/outlet connections with .310 Cv rating and 150 PSI capacity—perfect for demanding scientific and industrial applications.

## Overview

The NG-250-PPR Marquest Scientific Polypropylene Needle Valve offers precision flow control with 24 pitch metering threads delivering 20% finer adjustment. Its rugged, injection-molded polypropylene body with PTFE seals ensures corrosion-free, bubble-tight shutoff without elastomers or lubricants. Designed for easy panel mounting without fasteners, it supports 1/4" Female NPT connections and operates reliably up to 150 PSI, making it ideal for professional industrial and scientific use.

## Description

Marquest Throttle Master Polypropylene Needle Valve, Globe (Straight Pattern), 1/4" Fem NPT x 1/4" Fem NPT, PTFE Seal, .310 Cv, 150 PSI @ 72° Fahrenheit

## Features

- Needle finish, SPI/SPE No. 1. Bubble tight, low torque shutoff long term performance.
- All injection molded, rugged design and construction
- 24 Pitch metering thread. 20% Finer metering control. Excellent Linearity of Flow.
- Integrally designed panel mounting, no fasteners required, mounts to panel thicknesses from 1/16" to 1/2".
- No elastomers (O-Rings), metals or lubricants, no corrosion, no contamination.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N5LLBUJ |
| Best Sellers Rank | #776,438 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #180 in Needle Valves |
| Brand | Throttle Master |
| Brand Name | Throttle Master |
| Customer Reviews | 4.0 out of 5 stars 1 Review |
| Exterior Finish | Polypropylene |
| Inlet Connection Type | 1/4" Female NPT |
| Item Dimensions | 2.3 x 2 x 3.7 inches |
| Item Weight | 2.9 Ounces |
| Item dimensions L x W x H | 2.3 x 2 x 3.7 inches |
| Manufacturer | Marquest Scientific |
| Manufacturer Part Number | NG-250-PPR |
| Material | Polypropylene |
| Material Type | Polypropylene |
| Model Number | Throttle Master |
| Number of Ports | 2 |
| Outlet Connection Size | 0.25 Inches |
| Outlet Connection Type | 1/4" Female NPT |
| Specification Met | ASTM |
| Thread Type | 1/4" Female NPT |
| UPC | 710928961207 |
| Unit Count | 1 Count |
| Valve Type | Needle Valve |

## Images

![NG-250-PPR Marquest Scientific Polypropylene Needle Valve, 1/4" Fem NPT x 1/4" Fem NPT, PTFE Seals - Image 1](https://m.media-amazon.com/images/I/7198QrTTz8L.jpg)

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**Shop now:** [https://www.desertcart.com.pa/products/45473125-ng-250-ppr-marquest-scientific-polypropylene-needle-valve-1-4](https://www.desertcart.com.pa/products/45473125-ng-250-ppr-marquest-scientific-polypropylene-needle-valve-1-4)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-10-16*