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ℹ️ Additional Information
| Condition |
USED/GOOD WORKING CONDITION |
|---|---|
| Manufacturer |
NAKAKITA |
| Product Code |
100.199.00294, 100.199.00295, 100.199.00296 |
📦 Guarantee Terms
🗂️ Product Files
🖹 Description
Maker : Nakakita Seisakusho
Model : NS953A
Input Press : 9.9 kg/cm2
MAX.:9.9kg/cm2
This is a gauge saver (pressure gauge protector).
The gauge saver (pressure gauge protector) model NS953A by Nakahita Seisakusho Co., Ltd. is a critical safety device designed to protect pressure gauges from damage caused by overpressure and sudden pressure surges. It is widely used in industrial systems where pressure fluctuations can compromise measurement accuracy and equipment safety.
What It Is
The NS953A is a mechanical pressure gauge protection device installed between the process line and a pressure gauge. Its primary function is to isolate the gauge when pressure exceeds a predefined limit, preventing damage or failure.
What It Does
This device safeguards sensitive measurement instruments by:
- Protecting against overpressure conditions
- Blocking pressure spikes and surges
- Automatically isolating the gauge when limits are exceeded
By doing so, it ensures longer lifespan and reliable performance of pressure gauges.
How It Works
The operation is simple yet highly effective:
- A maximum pressure threshold is set using the adjustment mechanism
- When system pressure is below this limit, pressure is transmitted normally to the gauge
- When pressure exceeds the setpoint, the device automatically shuts off or isolates the gauge
- Once pressure returns to safe levels, normal operation resumes (depending on design)
Design and Components
The NS953A features a compact and durable design:
- Main body: Houses the pressure chamber
- Adjustment mechanism (top): Used to set the trip pressure
- Inlet and outlet ports: Installed inline between process and gauge
- Label specifications: Maximum pressure approximately 9.9 kg/cm² (~10 bar)
Typical Installation
The device is installed directly in the pressure line:
👉 Process line → Gauge saver → Pressure gauge
Example Scenario
- Gauge maximum rating: 6 bar
- Gauge saver setpoint: 5 bar
| Pressure | Result |
| 3 bar | Normal reading |
| 5 bar | Still within limit |
| 6+ bar | Gauge is isolated (protected) |
Typical Applications
Gauge savers are commonly used in:
- Steam systems
- Hydraulic circuits
- Compressed air systems
- Industrial processes with pressure fluctuations
Why It’s Important
- Prevents gauge damage or rupture
- Enhances operator safety
- Reduces maintenance and replacement costs
- Ensures reliable pressure readings
In Simple Terms
Think of the NS953A as a “safety valve for your pressure gauge”, protecting it from dangerous pressure conditions.
Role in a System
- Regulators and valves → control pressure
- Indicators and switches → monitor pressure
- Gauge saver (this device) → protects measurement instruments
System Context
In your overall setup:
- Differential indicator → shows pressure difference
- Differential switch → triggers alarms
- I/P converter → converts signals
- Gauge saver → protects pressure instruments
Overall, the Nakahita NS953A is an essential protective component that ensures safety, accuracy, and longevity in industrial pressure measurement systems.
