Home / Product / 气动阀 / DELCO DK67-DC Pneumatic Cast Iron Butterfly Valve - PTFE Lined / Rubber Seat, Wafer Type

Catalog: 气动对夹蝶阀

Model:

DK67-DC

DELCO DK67-DC Pneumatic Cast Iron Butterfly Valve – PTFE Lined / Rubber Seat, Wafer Type

The DELCO DK67-DC is a versatile pneumatic wafer butterfly valve featuring a cost-effective Ductile Iron (GGG50) body. Available with either a corrosion-resistant PTFE/FEP lining for chemical applications or an economical NBR/EPDM seat for general water systems. Driven by a high-torque AT Series Pneumatic Actuator, it ensures reliable automation for diverse industrial pipelines.

Size Range: DN40-DN1200

Material:Cast Iron, WCB, SS304/316 etc.

Connection Standard: GB / ANSI / JIS /DIN

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Features

A versatile pneumatic wafer butterfly valve with a ductile iron body and PTFE lining or rubber seat options, offering cost-effective automation for chemicals and water.

✅Corrosion-Resistant Lining: The fully lined PTFE or FEP seat option isolates the cast iron body from the medium, providing exceptional chemical resistance similar to Stainless Steel Lined Valves, but at a fraction of the cost.

✅Economical Rubber Option: Also available with a replaceable NBR or EPDM seat for non-corrosive media like municipal water and compressed air, offering a budget-friendly solution for general utility lines.

✅Reliable Pneumatic Automation: Powered by a Rack & Pinion AT Pneumatic Actuator (Double Acting or Spring Return), delivering high output torque and fast response times for precise process control.

✅Robust Ductile Iron Body: Constructed from high-strength Ductile Iron (GGG50) coated with epoxy resin for rust prevention, ensuring durability in harsh industrial environments.

✅Zero-Leakage Sealing: The precision-machined disc and resilient seat design guarantee a bubble-tight shutoff, preventing leakage even in low-pressure systems.

Photo

Specifications & Dimensions

Specifications Dimensions

Technical Specifications	Details
Nominal Port Size	DN40 – DN1200
End Connection	Wafer Type
Pressure Rating	PN16 – PN100 (1.6 – 10.0 MPa) ANSI Class 150 / 300 / 400 / 600
Body Material	– Ductile Iron (GGG50): for PN10/PN16/PN25 – Carbon Steel (WCB): for PN40 – PN100 – Stainless Steel (SS304/SS316): Optional
Lining / Seat Material	PTFE (Teflon), EPDM, NBR, VITON
Applicable Medium	– Type C: Water, Steam, Oil, Liquefied Gas (Standard) – Type P/R: Strong Acids, Alkalis, Corrosive Chemicals (Lined)
Temperature Range	– Standard: -20°C ~ +80°C – High Temp: Up to +150°C (depending on seat material)
Leakage Class	ANSI Class VI (Zero Leakage) / ISO 5208 Rate A
Actuator Type	Pneumatic (Double Acting or Single Acting NO/NC)
Actuator Material	Aluminum Alloy
Operating Time	0.5 ~ 3s (Adjustable)
Air Supply Pressure	3 – 8 bar
Certifications	CE, ISO9001, SIL, ATEX, BV, FDA

Model	DN50	DN65	DN80	DN100	DN125	DN150	DN200	DN250	DN300	DN350	DN400	DN500	DN600
Inch	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″	16″	20″	24″
D	50	65	80	100	125	150	200	250	300	350	400	500	600
D1	96	104	127	153	180	206	270	320	368	428	482	605	–
D2	125	145	160	180	210	240	295	355	410	470	525	650	725
L	45	47	48	58	59	59	64	70	78	80	108	120	152
H	212	225	256	280	315	345	405	480	554	–	–	–	–
n-Φd	4-Φ18	4-Φ18	4-Φ18	4-Φ18	4-Φ18	4-Φ23	4-Φ23	4-Φ23	4-Φ26	4-Φ26	4-Φ26	4-Φ30	4-Φ36

Key Application Fields

Oil & Gas

DELCO API-certified valves ensuring safety and reliability in demanding high-pressure pipelines.
Chemical & Petrochemical

DELCO corrosion-resistant solutions tailored for handling aggressive acids and hazardous fluids safely.
Power Generation

DELCO solutions efficiently withstand extreme high-temperature and high-pressure steam cycles in power plants.
Food & Pharmaceutical

DELCO sanitary valves with FDA-compliant, crevice-free designs to ensure absolute product purity.
Water & Wastewater

Durable municipal solutions by DELCO, designed for zero leakage and long-term sustainability.
HVAC & District Heating

DELCO valves ensure precise flow regulation to optimize energy efficiency in modern buildings.