Fisher Type LR128 Pilot-Operated Pressure Relief & Backpressure Regulator | High-Pressure Control Valve Supplier

Fisher LR128 is a high-pressure pilot-operated relief and backpressure regulator offering stable control, flexible configuration, and long service life for demanding industrial applications.

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Description

🌱 ✨ Product Overview

The Fisher Type LR128 is a high-performance pilot-operated relief and backpressure regulator designed for stable pressure control in demanding industrial systems. With its external pressure registration and wide spring range, it delivers consistent protection and precise regulation even under high inlet pressure conditions.

Built for long-term operation, this model is ideal for applications where pressure stability, safety, and durability are critical.

⚙️ ⭐ Key Features

Pilot-operated design for accurate pressure control
External pressure registration for improved system response
Wide spring range supports flexible operating conditions
Multiple body sizes and connection options for easy integration
High inlet and outlet pressure rating up to 450 PSIG

Designed to reduce pressure fluctuations while minimizing maintenance needs.

🎯 💡 Typical Applications

The LR128 is well suited for users who:

Need reliable overpressure protection in gas or liquid systems
Want to avoid sudden shutdowns or equipment damage
Require stable backpressure control in production lines
Are managing high-pressure pipelines or processing systems

For both industrial operators and engineering teams, this regulator helps ensure safe, uninterrupted operation.

📊 📐 Technical Parameters

Pressure Registration	External
Temperature Capabilities	17E68 NBR: -20 to 150°F (-29 to 66°C) 17E97 NBR: 0 to 150°F (-18 to 66°C) 17E88 FKM: 0 to 250°F (-18 to 121°C)
Body Sizes	NPS 1 / 2 / 3 / 4 \| DN 25 / 50 / 80 / 100
End Connections	NPT / SWE / CL150RF / CL300RF / CL600RF / PN16/25/40
Maximum Inlet Pressure	450 PSIG / 31 bar (or body rating limit)
Maximum Outlet Pressure	450 PSIG / 31 bar (or body rating limit)
Spring Ranges	25 to 375 PSIG / 1.7 to 25.9 bar

Fisher Type LR128 Pilot-Operated Pressure Relief Valve Or Backpressure Regulator

🤝 🌍 For Business Partners

We understand that choosing a relief regulator is not just about specifications—it’s about system safety and long-term reliability.

Our team supports you with model selection, configuration advice, fast response, and stable supply, helping you reduce technical risks and project delays.

If you need support, we are ready to work with you as a long-term partner, not just a supplier.

Packing & Delivery

1. Precision Packing

At INSTRUBEST, ensuring that your instruments and equipment arrive safely is our top priority. We take the following measures to protect each product:

High-Quality Packing Materials: We use durable materials such as bubble wrap, foam padding, and sturdy cartons to shield products from shocks and vibrations during transit.
Custom Packaging: Tailored packaging solutions are designed to fit the specific needs of different types of instruments and equipment, ensuring maximum protection.
Labels and Markings: All packages are clearly labeled with handling instructions and precautions to minimize the risk of damage during shipping.

2. Rigorous Quality Inspection

Before shipment, our quality control team performs a thorough inspection of each product to ensure that it meets our high standards. We are committed to addressing any potential issues to guarantee the performance and integrity of your equipment.

3. Fast Shipping

We understand that timely delivery is crucial for your business, which is why we offer efficient shipping services:

Processing Time: Orders are processed and prepared for shipment within 24 hours of confirmation.
Shipping Options: We provide a range of shipping options, including standard delivery, expedited services, and international shipping, to suit your needs.
Tracking Services: Once shipped, you will receive a tracking number to monitor the status of your order in real-time.

4. Global Delivery

We are dedicated to delivering products to locations around the world. No matter where you are, we ensure that your instruments and equipment reach you safely and promptly.

5. After-Sales Support

If you encounter any issues with packaging or delivery, please contact our customer service team. We offer comprehensive after-sales support to address any concerns and ensure your complete satisfaction.

FAQ

Q: How long will you give me the reply?

A: We will reply to you as soon as we see the information

Q: What is the delivery time?

A: Our delivery time is within 3-7 days after we get your payment; for large qty mass orders, the time should be confirmed again for you

Q: How about your package?

A: Do not worry about the package, we have rich experience in packing, and all our package is wooden case package .

Q: How about the payment terms ?

A:You can choose T/T.

Q: Do you provide samples ?

A: Yes,we have materials in stock to help you to get the samples as soon as we can.

Q: What is the MOQ?

A:1PC.

Q: Can I get a lower price if I order large quantities?

A: Yes, cheaper prices with more bigger size orders.