Fisher Y692VB Series Vacuum Breaker | Reliable Vacuum Protection for Gas & Process Systems

The Fisher Y692VB Series Vacuum Breaker delivers dependable vacuum relief, material flexibility, and stable performance for industrial gas and process systems requiring effective negative pressure protection.

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Description

Fisher 627 Series Commercial / Industrial Regulators

✦ Product Overview

The Fisher Y692VB Series Vacuum Breaker is designed to provide stable and responsive vacuum protection in gas and process systems where negative pressure control is critical.

By automatically admitting air when vacuum levels exceed preset limits, it helps protect piping, vessels, and equipment from structural damage, especially during abnormal operating conditions or sudden shutdowns.

✦ Key Strengths

What sets the Y692VB Series apart is its wide material compatibility and precise vacuum control, allowing it to perform reliably across industrial gas, chemical, and utility applications. With multiple elastomer options and flexible end connections, this vacuum breaker adapts easily to diverse installation requirements without over-complicating system design.

⚙️ Features

External or internal pressure registration options for flexible system integration
Wide vacuum control ranges to suit both light and deep vacuum applications
Multiple body materials including cast iron, steel, stainless steel, and Hastelloy C
Broad temperature capability with NBR, FKM, FFKM, EPDM, and VMQ options
Designed for long-term stability, even under fluctuating vacuum conditions

🧭 Applications

For B-end users, the Y692VB helps reduce maintenance risk and system downtime, especially in installations where vacuum excursions can damage equipment or disrupt operations.

For C-end users, it offers peace of mind, ensuring vessels and pipelines remain protected without constant manual monitoring.

Typical applications include:

Gas distribution and transmission systems
Vacuum protection for process vessels and tanks
Industrial gas handling and utility systems
Chemical and specialty gas installations

📊 Specifications

Pressure Registration	Internal (Y692VB) / External (Y692VBM)
Body Sizes	NPS 1, 2, 3, 4 / DN 25, 50, 80, 100
End Connections	NPT / SWE / CL150RF / CL300RF / CL600RF / PN 16/25/40
Maximum Allowable Inlet Pressure	13 psig (30 mm orifice) / 30 psig (19 mm orifice)
Maximum Outlet (Casing) Pressure	8 psig / 0.55 bar vacuum
Vacuum Control Pressure Ranges	1-inch w.c. to 3 psig / 2 to 207 mbar (6 ranges)
Temperature Capabilities	NBR, FKM, FFKM, EPDM, VMQ (up to 400°F / 204°C)

🤝 For B-End Buyers

We know that vacuum protection is often overlooked until problems occur.
That’s why we help you select the right configuration upfront, reducing engineering revisions, avoiding over-specification, and ensuring long-term system reliability.
If you need material matching, sizing guidance, or fast delivery coordination, our team is ready to support you.

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.