Flomatic CDK70 3" Flo-Trol® CDK – Stainless Steel Flow Control Valve (70 GPM)

The Flomatic CDK70 3" Flo-Trol® CDK – stainless-steel automatic flow control valve with a rated flow of 70 GPM and 3" M x 3" M threaded connections is engineered for high-capacity, constant flow regulation across a wide pressure range. This NSF/ANSI 61 and 372 certified valve is rated for a maximum working pressure of 200 psi and a maximum operating temperature of 180°F (82°C), making it ideal for commercial, industrial, municipal, and agricultural water systems.

The Flo-Trol® CDK series uses a flexible Buna-N flow-control orifice with no moving internal mechanical components. As system pressure changes, the orifice adjusts to maintain a nearly constant flow rate within ±15% between 15 and 125 psi. The all-stainless-steel body provides long service life and excellent corrosion resistance in demanding environments.

CDK series – All stainless-steel body with NSF 61 approved Buna-N flow-control orifice. MNPT x MNPT threaded configuration. Fully automatic constant-flow design with no mechanical moving parts. Maximum working pressure 200 psi. Maximum temperature 180°F (82°C). Flow accuracy ±15% between 15–125 psi.

Specifications:

Max Pressure: 200 psi

Max Temperature: 180°F (82°C)

Body: 304 Stainless Steel

Orifice Material: NSF 61 Approved Buna-N

Flow Accuracy: ±15% (15–125 psi)

Flow Rate: 70 GPM

Connection: 3" M × 3" M

Weight: 4 lbs

Operation: Flo-Trol® valves regulate flow automatically using a pressure-responsive Buna-N elastomeric orifice. As pressure fluctuates, the orifice flexes to maintain a stable flow rate without external controls, making it ideal for systems with varying demand.

Construction: The CDK valve body is constructed from corrosion-resistant 304 stainless steel. Each valve is laser-marked for flow rate and size identification. The Buna-N elastomeric orifice ensures responsive, consistent flow performance.

Features & Benefits:

• Automatic constant-flow regulation
• No moving mechanical parts
• ±15% flow accuracy across operating range
• All stainless-steel body construction
• NSF/ANSI 61 & 372 certified
• Buna-N elastomeric flow-control orifice
• Corrosion-resistant, long-lasting design
• Laser-engraved size and flow markings
• Maintenance-free operation

Applications:

• Municipal and industrial water systems
• Agricultural irrigation networks
• Water treatment and filtration
• High-volume distribution lines
• General systems requiring regulated high flow

* Refer to Flo-Trol® technical documentation for tolerance and performance details.