VAL-MATICDuctile Iron Globe-Body Disc Check Valves

VAL-MATIC Silent Check Valve: Double Disc, Inline Valve Body, 4 in Pipe Size

SKU 3G-OTH-438197

Also listed as: 1804ADSY · 1804A DSY

Brand

VAL-MATIC

Item

Silent Check Valve: Double Disc, Inline Valve Body, 4 in Pipe Size

Local availability & support

Delivery: Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

VAL-MATIC

Manufacturer Part Number

1804A-DSY 

Type

Inline Valve Body, Class 125 Flange 

Pipe Size

4 in 

Technical Documents

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VAL-MATIC Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The VAL-MATIC Silent Check Valve is a ductile iron globe-body disc check valve with a double-disc design, supplied as an inline valve body with a Class 125 flange and 4 in pipe size (MPN 1804A-DSY). 3G Electric interprets this demand and sources the exact OEM part, backed by specialist expertise in pumps and controls to ensure the right solution for your application.

Frequently Asked Questions

What is a VAL-MATIC Silent Check Valve used for?

A VAL-MATIC Silent Check Valve prevents reverse flow in piping systems, protecting pumps and equipment from water hammer. It is commonly used in water and wastewater, HVAC, and industrial process applications where reliable backflow prevention is critical.

What are the specifications of the VAL-MATIC 1804A-DSY Silent Check Valve?

The VAL-MATIC 1804A-DSY is a double disc silent check valve with a ductile iron globe-body, inline valve body, and Class 125 flange. It has a 4 in pipe size and is designed for low-pressure loss and quiet operation in horizontal or vertical installations.

Where to buy a VAL-MATIC Silent Check Valve worldwide?

3G Electric supplies the VAL-MATIC 1804A-DSY Silent Check Valve worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this valve.

How to install a VAL-MATIC Silent Check Valve?

Install the VAL-MATIC Silent Check Valve in the pipeline with flow direction matching the arrow on the body. Use proper gaskets and tighten flange bolts evenly to avoid distortion. Ensure the valve is accessible for inspection and maintenance per manufacturer guidelines.

Used in

Common applications for VAL-MATIC

Municipal water distribution — VAL-MATIC butterfly valves (e.g., 2003-CD4B5N-L1-1) for isolation and flow control in potable water lines.

Wastewater treatment plants — VAL-MATIC plug valves (e.g., 5801RTL) for sludge and effluent handling with abrasion-resistant Buna-N seals.

Industrial process cooling — VAL-MATIC silent check valves (e.g., 1810A-DSY) to prevent backflow and water hammer in pump discharge lines.

Irrigation systems — VAL-MATIC air release/vacuum valves (e.g., 80C03-2GT-C6B6Y) to maintain pipeline integrity and prevent air locks.

Fire protection systems — VAL-MATIC butterfly valves (e.g., 2006-CD4B5N-L2-1) for sectional control in sprinkler risers, rated to 150 psi.

VAL-MATIC Products

3G Electric supplies VAL-MATIC ductile iron globe-body disc check valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

Browse all VAL-MATIC products →Contact our engineers →