Stainless Steel Wafer Butterfly Valve, PTFE/RPTFE Seated

When the line media is chemically aggressive, abrasive, or demands purity, the sealing material determines the valve’s service life. Engineered for reliability in harsh environments, this stainless steel wafer butterfly valve features a PTFE or RPTFE (reinforced PTFE) seat, providing exceptional chemical resistance, low friction, and stable performance across a wide temperature range.

KEFA manufacture wafer type butterfly valve from premium 304, 316, 316L stainless steel, ensuring full corrosion resistance for the body, disc, and stem. The PTFE seat delivers a nearly universal chemical compatibility profile. For special working environments, duplex stainless steel may be used as the valve body material.

Series PZ-P-B
Type Concentric Resilient Seal
Size DN50-500mm, NPS 2"-20"
Design Standard EN 593, API 609
Pressure Rating PN10/PN16/125LB/150LB/10K
Certificate ISO, CE, WRAS, ACS
Sample Available
Service OEM & ODM

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Features

Specifications

Dimension

Features

Valve Body Process	Precision cast
Operation Cycles	Over 100,000 times
Leakage Level	Bubbles-tight sealing with no leakage
Low Torque	Operation easy and flexible
Bidirectional Sealing	Any installation position
Lower Cost	Simple and compact structure with high cost-effectiveness
Low Flow Resistance	Improve fluid efficiency and reduce energy consumption
Wide Application	Water treatment, petrochemicals, electricity, chemistry, etc
Certificates	ISO9001, CE, WRAS, ACS

Specifications

Design Standard	EN 593 API 609
Top Flange Standard	ISO 5211
End Flange Standard	EN1092 PN10/16, ANSI 125LB/150LB, JIS 10K
Face to Face Dimension	API 609, EN558-1 Series 20, BS5155, DIN3202 K1
Testing Standard	API 598, EN12266
Temperature	-20℃~120℃(depends on the sealing material)
Body Material	CF8, CF8M, CF3M, 2205, 2507
Disc Material	Stainless Steel, Aluminum Bronze
Shaft Material	Stainless Steel, Aluminum Bronze, Inconel
Seat Material	PTFE, RPTFE
Operator	Lever, Gearbox, Pneumatic, Electric Actuator

Dimension

stainless steel wafer butterfly valve drawing

Size	L	A	PN10		PN16		ANSI 150LB		10K		Top Flange
			Ф D1	n - Ф d	Ф D1	n - Ф d	Ф D1	n - Ф d	Ф D1	n - Ф d
40	32.6	113	110	4-18	110	4-18	98.4	4-16	105	4-19	F05
50	42	128	125	4-18	125	4-18	120.7	4-19	120	4-19	F05
65	45	135	145	4-18	145	4-18	139.7	4-19	140	4-19	F05
80	45	144	160	8-18	160	8-18	152.4	4-19	150	8-19	F05
100	50	163	180	8-18	180	8-18	190.5	8-19	175	8-19	F07
125	53.5	189	210	8-18	210	8-18	215.9	8-22	210	8-23	F07
150	56	203	240	8-22	240	8-22	241.3	8-22	240	8-23	F07
200	59	243	295	8-22	295	12-22	298.5	8-22	290	12-23	F10
250	65.5	268	350	12-22	355	12-26	362	12-26	355	12-25	F10
300	76.5	313	400	12-22	410	12-26	431.8	12-26	400	16-25	F10
350	76.5	339	460	16-22	470	16-26	476.3	12-29	445	16-25	F10
400	85.7	400	515	16-28	525	16-31	539.7	16-28.4	510	16-27	F14
450	104.6	422	565	20-28	585	20-31	577.8	16-31.8	565	20-27	F14
500	127	480	620	20-28	650	20-34	635	20-31.8	620	20-27	F14
600	151.4	562	725	20-31	770	20-37	749.3	20-35.1	730	24-33	F16