Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
VAL-MATIC 103STK Cast Iron Vacuum Release Valve, 3 in FNPT/NPT - Vacuum Release Valves
VAL-MATICVacuum Release Valves

VAL-MATIC 103STK Cast Iron Vacuum Release Valve, 3 in FNPT/NPT

The VAL-MATIC Air Vacuum Valve for clean water is a cast-iron vacuum release valve with a 3-inch FNPT/NPT inlet connection (MPN 103STK). Designed to exhaust large volumes of air during pipeline filling and admit air…

SKU 3G-OTH-431025

Also listed as: 103 STK · 103-STK

Brand
VAL-MATIC
Item
103STK Cast Iron Vacuum Release Valve, 3 in FNPT/NPT
Part Number
103STK
Category
Vacuum Release Valves
Available to Order
Also known as:103STKVAL-MATIC
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

VAL-MATIC
Manufacturer Part Number
103STK
Type
Cast Iron, FNPT, NPT
Inlet Connection Size
3 in

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

VAL-MATIC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The VAL-MATIC Air Vacuum Valve for clean water is a cast-iron vacuum release valve with a 3-inch FNPT/NPT inlet connection (MPN 103STK). Designed to exhaust large volumes of air during pipeline filling and admit air during draining, it protects water systems from vacuum conditions.

Frequently Asked Questions

What is a VAL-MATIC Air Vacuum Valve used for?

A VAL-MATIC Air Vacuum Valve is used in clean water systems to release large volumes of air during pipeline filling and to admit air during draining or vacuum conditions. It prevents vacuum collapse and protects piping infrastructure in municipal water, wastewater, and industrial applications.

What are the specifications of the VAL-MATIC 103STK Air Vacuum Valve?

The VAL-MATIC 103STK Air Vacuum Valve is a cast iron vacuum release valve with a 3-inch FNPT inlet connection size and NPT threads. It is designed for clean water service and is manufactured by VAL-MATIC under part number 103STK. The valve ensures reliable air release and vacuum protection.

Where to buy a VAL-MATIC Air Vacuum Valve worldwide?

You can source the VAL-MATIC Air Vacuum Valve worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this VAL-MATIC 103STK model.

How to install a VAL-MATIC Air Vacuum Valve?

Install the VAL-MATIC Air Vacuum Valve vertically above the pipeline with the inlet connected to a threaded FNPT fitting. Ensure the valve is oriented upright for proper float operation. Use thread sealant on NPT connections and follow standard piping practices for clean water systems to avoid debris entry.

Used in

Common applications for VAL-MATIC
Municipal water treatment — VAL-MATIC 8-inch lug-style butterfly valve with lever handle for isolation on filter influent lines.
Wastewater pumping stations — VAL-MATIC 2-inch combination vacuum and air release valve to prevent air lock and vacuum collapse.
Industrial cooling water systems — VAL-MATIC 4-inch gear-operated butterfly valve for throttling flow in recirculating loops.
Pipeline filling and draining — VAL-MATIC 3-inch vacuum release valve to exhaust large air volumes and admit air during shutdown.
Potable water distribution — VAL-MATIC 3-inch butterfly valve with NSF 372 compliance for lead-free isolation in buried service.
Process water isolation — VAL-MATIC 8-inch bare stem butterfly valve for actuated control in automated plant piping.
Not sure this is the right part? Photo-identify it→

VAL-MATIC Products

3G Electric supplies VAL-MATIC vacuum release valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

More from VAL-MATIC

View all VAL-MATIC parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first