---
product_id: 288928075
title: "Slack Tube® Manometer, 1211-36, 18-0-18\" w.c."
brand: "dwyer"
price: "R9936"
currency: ZAR
in_stock: true
category: "Dwyer"
url: https://www.desertcart.co.za/products/288928075-slack-tube-manometer-1211-36-18-0-18-w-c
store_origin: ZA
region: South Africa
---

# 18-0-18" w.c. pressure range 360° tubing connector freedom Over pressure safety traps Slack Tube® Manometer, 1211-36, 18-0-18" w.c.

**Brand:** dwyer
**Price:** R9936
**Availability:** ✅ In Stock

## Summary

> 🛠️ Master pressure measurement with precision and portability!

## Quick Answers

- **What is this?** Slack Tube® Manometer, 1211-36, 18-0-18" w.c. by dwyer
- **How much does it cost?** R9936 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/288928075-slack-tube-manometer-1211-36-18-0-18-w-c)

## Best For

- dwyer enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Corrosion-proof, leak-proof nylon connectors withstand tough jobs
- • **Effortless Setup & Seal:** Rapid shutoff with one-turn twist for instant readiness
- • **Versatile Pressure Testing:** Handles static, vacuum, and differential pressures up to 50 psi
- • **Precision Meets Portability:** Compact roll-up design for on-the-go pros
- • **Accurate Readings Every Time:** Center-mounted scale with sliding zero adjustment eliminates parallax error

## Overview

The Dwyer® Slack Tube® Manometer 1211-36 offers a robust 18-0-18" water column pressure range with over pressure safety traps to prevent fluid loss. Its flexible vinyl-plastic columns and corrosion-proof nylon connectors ensure durability and accuracy, while the compact roll-up design and magnetic clips make it ideal for field professionals needing reliable static, vacuum, and differential pressure measurements.

## Description

Dwyer Slack Tube Manometers are as accurate as the finest laboratory "U" gages - yet they are made to roll up compactly for easy carrying and to withstand rough usage. Simply unroll the Dwyer Slack Tube Manometer and set up to read static pressure, vacuum, or Differential Pressure. Magnetic clips hold it firmly to any steel surface or hang it on a nail. Dwyer Slack Tube Manometers cover a wide range of pressure readings from 4-0-4 inches up to 60-0-60 inches. Use them in determining velocity and static pressures, for leakage, fan and blower tests, calibrating control devices, checking gas pressure and many other applications. All models have flexible vinyl-plastic columns and flexible spring steel scale calibrated in inches of water using water; and inches of mercury using mercury. Scale is center-mounted between columns to eliminate parallax error and has a full 2" sliding zero adjustment. All Dwyer Slack Tube Manometers feature exclusive molded nylon tubing connector assemblies with rapid shutoff design in an acrylic plastic top. One turn counter clockwise and the instrument is ready for use. Another turn seals the tubes completely. Molded all-nylon construction makes this assembly corrosion-proof, leak-proof and practically unbreakable. Tubing connectors extend horizontally allowing 360° freedom.

## Features

- MANUFACTURER DIRECT
- All models have over pressure safety traps in the top of both columns to prevent loss of fluid due to over range pressures or surges in pressure.
- Slack Tube Manometers are suitable for intermittent total pressure to 50 psi and vacuum not exceeding 20" Hg.
- Avoid temperatures above 130°F and continuous high total pressure.
- Not for use with red gage fluid; use only water.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0025PIPTQ |
| Best Sellers Rank | #258,713 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #72 in Manometers |
| Brand Name | Dwyer |
| Customer Reviews | 5.0 5.0 out of 5 stars (2) |
| Item Dimensions | 7.2 x 7.3 x 2.8 inches |
| Manufacturer | Dwyer Instruments, Inc. |
| Material Type | Acrylic |
| Model | 1211-36 |
| Number of Items | 1 |
| Part Number | 1211-36 |
| Thread Style | Npt Or Bspp |

## Product Details

- **Brand:** Dwyer
- **Item dimensions L x W x H:** 7.2 x 7.3 x 2.8 inches
- **Material:** Acrylic
- **Number of Items:** 1
- **Thread Type:** Npt Or Bspp

## Images

![Slack Tube® Manometer, 1211-36, 18-0-18" w.c. - Image 1](https://m.media-amazon.com/images/I/31dLR92zKLL.jpg)

## Frequently Bought Together

- Dwyer® Slack Tube® Manometer, 1211-36, 18-0-18" w.c.
- SUNEX TOOLS 533MD, 1 Inch Drive, 33mm Deep Impact Socket, Cr-Mo Steel, Radius Corner Design, Chamfered Opening, Dual Size Markings
- Pure Silicone Tubing - 1/8" ID x 1/4" OD - High Temp Kink-free Hose Tube 500F (10 Feet)

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**Shop now:** [https://www.desertcart.co.za/products/288928075-slack-tube-manometer-1211-36-18-0-18-w-c](https://www.desertcart.co.za/products/288928075-slack-tube-manometer-1211-36-18-0-18-w-c)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-11-06*