Name: DN500 Wafer Butterfly Valve with Locating Pin
Brand: Laux Valve
Availability: InStock
Rating: 5 (1 reviews)

Description

Key Features

Locating Pin Design — Precision alignment pin ensures perfect centering between flanges, preventing disc-to-body interference and extending valve service life
Wafer Type Construction — Compact, lightweight design for economical installation between ANSI Class 150 / PN10-16 flanges
Ductile Iron Body — ASTM A536 Grade 65-45-12 ductile iron, epoxy coated for corrosion resistance
EPDM Lined Seat — Fully vulcanized EPDM rubber lining for bubble-tight shut-off and excellent chemical resistance in water and wastewater applications
Stainless Steel Disc (Optional) — SS304 or SS316 disc available for corrosive environments
API 598 Tested — 100% hydrostatic shell test and seat leakage test per API 598 standards
Full Traceability — Unique serial number with recorded test data for each valve

Parameter	Specification
Size	DN500 (20")
Type	Wafer Butterfly Valve with Locating Pin
Body Material	Ductile Iron ASTM A536 65-45-12
Disc Material	Ductile Iron (Option: SS304 / SS316 / CF8M)
Seat / Lining	EPDM (Option: NBR / PTFE Lined)
Pressure Rating	Class 150 / PN10 / PN16
Face-to-Face	API 609 Table 1 (Short Pattern)
Flange Drilling	ANSI B16.5 Class 150 / EN 1092-1 PN10/PN16
Test Standard	API 598 / EN 12266-1
Operation	Lever Handle / Worm Gearbox / Pneumatic Actuator
Coating	Epoxy Powder Coating (Min 250 microns)

Large-diameter wafer butterfly valves (DN300 and above) present unique installation challenges. The locating pin offers these advantages:

Eliminates Misalignment — The pin centers the valve body precisely between flanges, preventing disc contact with the pipe wall
Faster Installation — No need for manual centering or repeated adjustment, reducing installation time by up to 40%
Extended Seat Life — Proper alignment reduces uneven seat compression and premature wear
Consistent Performance — Guarantees that every installation achieves the same sealing performance as factory testing
Ideal for Large Diameters — Particularly valuable for DN400-DN600 where misalignment risk is highest

Option	Choices
Disc Material	DI Epoxy Coated / SS304 / SS316 / CF8M Stainless Steel
Seat Material	EPDM / NBR / PTFE Lined / FEP Lined
Operation	Lever / Gearbox / Pneumatic / Electric Actuator
Coating	Epoxy / RAL Color / Fusion Bonded Epoxy (FBE)
Extended Stem	For insulated pipework (specify extension length)

Size		A	B	C	d0	PCD	N-Q	ØK	ØE	N-ØP	B1xB2	J	L	ISO 5211
inch	mm	A	B	C	d0	PCD	N-Q	ØK	ØE	N-ØP	B1xB2	J	L	ISO 5211
1 1/2"	40	120	70	33	12.6	110	-	65	50	4-7	9x9	-	26	F05
2"	50	161	80	43	12.6	125	-	90	70	4-10	11x11	-	26	F07
2 1/2"	65	175	89	46	12.6	145	-	90	70	4-10	11x11	-	30	F07
3"	80	181	95	46	12.6	160	-	90	70	4-10	11x11	-	30	F07
4"	100	200	114	52	15.77	180	-	90	70	4-10	11x11	-	30	F07
5"	125	213	127	56	18.92	210	-	90	70	4-10	14x14	-	30	F07
6"	150	226	139	56	18.92	240	-	90	70	4-10	14x14	-	40	F07
8"	200	260	175	60	22.1	295	-	125	102	4-12	17x17	-	40	F10
10"	250	292	203	68	28.45	350	-	125	102	4-12	22x22	-	40	F10
12"	300	337	242	78	31.6	400	-	125	102	4-12	22x22	-	40	F10
14"	350	368	267	78	31.6	460	-	125	102	4-12	22x22	-	40	F10
16"	400	400	309	102	33.15	515	-	175	140	4-18	27x27	-	50	F14
18"	450	422	328	114	37.95	565	-	175	140	4-18	27x27	-	70	F14
20"	500	480	361	127	41.12	620	-	175	140	4-18	36x36	-	80	F14
24"	600	562	459	154	50.62	725	-	210	165	4-23	36x36	-	80	F16
28"	700	624	520	165	63.35	840	4-M27	300	254	8-18	-	2-18	85	F25
32"	800	672	591	190	63.35	950	4-M30	300	254	8-18	-	2-18	95	F25
36"	900	720	656	203	74.7	1050	4-M30	300	254	8-18	-	2-20	118	F25
40"	1000	800	721	216	84.7	1160	4-M33	300	254	8-18	-	2-22	118	F25
48"	1200	941	864	256	104.7	1380	4-M36	350	298	8-22	-	2-28	154	F30

Note: