Wafer PN16 EPDM Disc Butterfly Valve DN500

Size: DN500

Pressure Rating: PN16

Body: Ductile Iron(GGG/50)

Disc: EPDM fully lind ductile iron

Seat: Rubber(EPDM)

Actuator Options: Worm Gear

Sample: available

MOQ=1 SET

Customization/OEM: accept

Features of PN16 EPDM Disc Butterfly Valve

Breakthrough PN16 High-Pressure Rating: Unlike most rubber-lined butterfly valves on the market that are limited to a PN10 rating, our valves overcome technical constraints to achieve a true PN16 rating (16 bar / 1.6 MPa)—going beyond merely matching the PN16 flange drilling pattern.

100% Full Rubber Encapsulation for Corrosion Protection: All wetted parts—such as the valve body interior and the disc—are fully encapsulated in EPDM rubber. This ensures zero contact between the medium and the metal core, completely preventing corrosion of the valve body and disc by the medium.

Bi-directional Zero-Leakage Sealing: The smooth, EPDM-encapsulated disc forms a tight seal with the seat, maintaining bi-directional, gas-tight zero leakage even under a PN16 pressure differential.

Drinking Water Safety: Available with high-quality EPDM rubber that meets WRAS drinking water certification standards; non-toxic and odorless, making it suitable for potable water, tap water, and seawater desalination systems.

Part Name	Material/Method
Body	Ductile Iron, Casting Iron, WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze
Disc	Ductile Iron(Coated/Lined), WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze
Seat	PFA, Rubber(EPDM/NBR/VITON), Nature Rubber, Silicon Rubber, PU, HNBR, Hypalon
Stem	304, 316, 420(2Cr13), 431, 1.4462, 17-4PH, Monel
Actuator	Handlever, Worm Gear, Electric, Pneumatic

SIZE	øD	øD1	L	L1	H	H1	H2	ø2	ø3	4-ød1	T*T
DN25	55	33	26	29	30	122	48	50	65	7	11
DN40	65	43.1	33	36	30	139	70	50	65	7	11
DN50	82	53.08	42.5	46.1	30	140	60	70	90	10	11
DN65	94	64.82	45.6	49	30	150	67	70	90	10	11
DN80	111.2	79.04	45.6	48.4	30	160	87	70	90	10	11
DN100	140	104.04	52	56	30	180	105	70	90	10	11
DN125	166	123.3	56	60	30	190	118	70	90	10	14
DN150	187	155.68	56	60	30	210	130	70	90	10	14
DN200	246.8	201.9	60	64	35	235	166	102	125	12	17
DN250	301.5	250.45	68	72	35	270	197	102	125	12	22
DN300	352	301.55	78	83	35	305	231	102	125	12	22
DN350	390	333.8	78	83	35	360	255	125	150	14	22
DN400	452	389	102	106	50	381	293	140	175	18	27
DN450	510	439.2	114	118	50	425	325	140	175	18	27
DN500	564	491.4	127	132	50	470	363	140	175	18	36
DN600	651	579	153	159	60	565	425	165	210	22	36

Potable Water Distribution – Suitable for PN16 drinking water pipelines where corrosion protection and reliable shut-off performance are required.
Raw Water Intake & Transfer – Fully EPDM-encapsulated wetted surfaces help protect the valve from prolonged exposure to untreated or mineral-rich water.
Desalination Pretreatment – Designed for seawater and brackish-water handling in intake, filtration, and pretreatment systems where corrosion resistance is critical.
Water Storage & Pumping Stations – Provides dependable bi-directional isolation on high-pressure water lines, including pump discharge and reservoir connections.
Municipal Water Networks – Suitable for transmission and distribution pipelines requiring PN16 pressure capability and WRAS-approved elastomer options.
Filtration & Membrane Systems – Applicable to RO pretreatment, multimedia filtration, and other water-processing lines where clean internal surfaces and chemical resistance are important.
Cooling Water Circuits – Used for isolation and flow control in industrial cooling-water systems exposed to continuous water circulation and varying pressure conditions.