Size : 1/2”-48” Class: 150LB to 1500LB Design complies to API 609 Triple Offset Butterfly Valve

Size : 1/2”-48” Class: 150LB to 1500LB Design complies to API 609 Triple Offset Butterfly Valve

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Model NO. Triple Offset Butterfly Valves

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Body Material: Cast Carbon steel (WCC, WCB, WC6), Stainless Steel (SS316, SS304, SS316L, SS904L, CF8, CF8M, F31L, F91),
Duplex steel and Super duplex Steel (F51,F53,F55) ,
Size : 1/2” – 48”
Class: 150LB to 1500LB
Design complies to API 609
Wide portfolio of Short-pattern and Long-pattern valves
Fugitive emissions - Complies to ISO 15848-1 Endurance Class CO2 and Tightness class AH
Fire safe by design and complies to API 607/ ISO 10497 (preferred and non-preferred direction)

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Triple Offset Butterfly Valvesof SJ

SJ is one of the leading Triple Offset Butterfly Valve Manufacturers A triple offset valve butterfly has a circular disc inside the valve body as part of its construction. This disc stops the path when the valve is in the closed position, stopping the flow of liquids or gases. The opening can be precisely adjusted by rotating the disc either parallel to or perpendicular to the flow direction to control the flow. The triple eccentric butterfly valve is a popular option for applications that call for rapid shutdown or flow modulation due to its quick and simple functioning. Overall, butterfly valves provide a performance, adaptability, and cost-effectiveness balance that meets a variety of fluid control needs across industries.

Triple‑Offset vs Double‑Offset Butterfly Valve

Triple‑Offset vs Double‑Offset Butterfly Valve
Item	Triple‑Offset	Double‑Offset
Seal Type	Metal‑to‑metal hard seal	Soft / metal seal
Leakage Class	Class V‑VI (near zero leakage)	Class IV‑VI
Temp. Range	Up to 600‑900℃	‑40~450℃
Pressure	PN100 / 600‑900LB	PN10‑40 /150‑300LB
Feature	Low friction, fire‑safe API 607	Cost‑effective
Typical Service	High‑temp steam, petrochemical, power	Water, HVAC, general industrial
Cost	Higher	Lower

Brief Note： Triple‑offset for harsh high‑temp & high‑pressure working conditions. Double‑offset for standard general‑purpose applications.

Three-eccentric butterfly valve (Wafer Butterfly Valve – Dimensional Reference Diagram)

Three-eccentric butterfly valve (Wafer Butterfly Valve – Dimensional Reference Diagram)

Nominal Pressure (MPa)	Test Pressure(MPa)				Applicable Temperature	Applicable Medium


	Shell Test	High Pressure Seal		Low Pressure Seal


CLASS150	2.93	2.07		0.6	-29～425℃	Water,Steam,Oil,Seawater.


CLASS300	7.58	5.52		0.6

CLASS600	15.0	11.03		0.6

CLASS900	24.0	17.6		0.6

Material for Main Parts

Parts Name			Material

Body			WCB、304、316、316SS、CF8M


Disc			WCB、304、316、316SS、CF8M

Stem			316、2Cr13、1Cr18Ni9Ti

Sealing Ring			316、Fluorine Plastic

Main Connection Dimensions ASME 16.5 ASME 16.47B Unit:mm
Diameter		150Lb						300Lb
Inch	mm	L	H	H1	D1	D2	Z-φ(M)d	L	H	H1	D1	D2	Z-φ (M)d
2	50	43	300	210	120.5	92	4-19	43	330	230	127	92	4-19
3	80	49	340	230	152.5	127	4-19	49	420	270	168.5	127	4-22
4	100	54	400	265	190.5	157	4-19	54	490	305	200	157	4-22
5	125	57	480	325	216	186	4-22	57	530	345	235	186	4-22
6	150	58	530	345	241.5	216	4-22	61	590	380	270	216	4-(3/4)
8	200	64	620	395	298.5	270	4-22	73	650	410	330	270	4-(7/8)
10	250	71	680	425	362	324	4-25	83	750	470	387.5	324	4-(1)
12	300	81	800	495	432	381	4-25	92	860	545	451	381	4-(1-1/8)
14	350	92	880	555	476	413	4-29	117	940	590	514.5	413	4-(1-1/8)
16	400	102	950	590	540	470	4-(1)	133	990	640	571.5	470	4-(1-1/4)

18	450	114	1000	630	578	533	4-(1-1/8)	149	1100	690	628.5	533	4-(1-1/4)

20	500	127	1110	700	635	584	4-(1-1/8)	159	1200	740	686	584	4-(1-1/4)
24	600	154	1230	750	749.5	692	4-(1-1/4)	181	1360	850	813	692	4-(1-1/2)

28	700	165	1350	810	795.3	762	8-(3/4)	229	1430	870	857.2	787	4-(1-1/4)
32	800	190	1390	840	900.1	864	8-(3/4)	254	1570	950	977.9	902	4-(1-1/2)

36	900	203	1660	1000	1009.6	972	8-(7/8)	254	1750	1110	1089	1010	4-(1-5/8)
40	1000	216	1720	1080	1120.8	1080	8-(1)	300	1980	1200	1190.6	1114	4-(1-5/8)

48	1200	254	2080	1250	1335.1	1289	8-(1-1/8)	360	2130	1270	1416	1327	4-(1-7/8)

Diameter		600Lb						900Lb
Inch	mm	L	H	H1	D1	D2	Z-Φ(M)d	L	H	H1	D1	D2	Z-Φ(M)d
2	50	43	355	230	127	92	4-(5/8)	一	一	一	一	一	一

3	80	54	480	290	168.3	127	4-(3/4)	一	一	一	一	一	一
4	100	64	510	320	215.9	157	4-(7/8)	一	一	一	一	一	一

5	125	76	590	380	266.7	186	4-(1)	一	一	一	一	一	一
6	150	78	620	400	292.1	216	4-(1)	104	760	460	317.5	216	4-(1-1/8)

8	200	102	730	460	349.2	270	4-(1-1/8)	112	850	530	393.7	270	4-(1-3/8)
10	250	117	870	550	431.8	324	4-(1-1/4)	135	980	635	469.9	324	4-(1-3/8)

12	300	140	930	600	489	381	4-(1-1/4)	170	1050	690	533.4	381	4-(1-3/8)
14	350	155	1005	630	527	413	4-(1-3/8)	173	1130	720	558.8	413	4-(1-1/2)
16	400	178	1135	705	603.2	470	4-(1-1/2)	210	1195	740	616	470	4-(1-5/8)

18	450	200	1200	750	654	533	4-(1-5/8)	228	1340	840	685.8	533	4-(1-7/8)
20	500	216	1270	780	723.9	584	4-(1-5/8)	250	1410	865	749.3	584	4-(2)

24	600	232	1440	880	838.2	692	4-(1-7/8)	275	1645	990	901.7	692	4-(2-1/2)

This data is for reference only; for detailed information, please consult our technical personnel.

FAQ1: Which ASME standards does this butterfly valve comply with?
Our ASME Wafer Butterfly Valve is strictly designed and manufactured in accordance with ASME B16.34 (Valves — Flanged, Threaded, and Welding End) standards, and the flange connection dimensions conform to ASME B16.5. Each product undergoes rigorous pressure testing and quality inspection to ensure safe and reliable performance under high-temperature and high-pressure conditions. Certification documents for specific pressure classes (e.g., Class 150/300/600) are available upon request.

FAQ2: What materials are available for the valve body and seat?
We offer a wide range of material options to meet the requirements of different media and operating conditions. Valve body materials include WCB carbon steel, CF8/CF8M stainless steel, and ductile iron. Seat materials cover PTFE, RPTFE, EPDM, NBR, and metal hard-seated options, which can be flexibly selected based on media temperature, corrosiveness, and application scenarios. Please provide your specific operating parameters, and our technical team will recommend the optimal material combination for you.

FAQ3: What applications and media is this valve suitable for?
The ASME Wafer Butterfly Valve is widely used in industries such as oil and gas, chemical processing, power generation, water treatment, and pulp and paper. It is suitable for on/off service and flow regulation of various media including water, steam, oil, acid/alkali solutions, and gases. The standard operating temperature range is generally -29°C to 200°C for soft-seated valves, or higher temperatures for metal hard-seated valves, depending on the seat material selected.

FAQ4: What is your lead time and minimum order quantity?
The lead time for standard-size products is typically 15–30 working days. For special materials or non-standard custom products, the lead time will be evaluated based on the specific order. The minimum order quantity is usually 1 unit, and bulk orders are eligible for more competitive pricing. We support various trade terms including FOB and CIF, and third-party inspections (e.g., SGS, TÜV) can be arranged. For a detailed quotation and delivery schedule, please provide the valve size, pressure class, and material requirements, and we will prepare a comprehensive proposal for you promptly.

FAQ5: What is the main difference between triple‑offset and double‑offset butterfly valve?

A: Double‑offset has two shaft offsets, mainly for medium‑temperature general service with soft or metal seal. Triple‑offset adds a third conical sealing offset, adopts metal‑to‑metal hard seal, designed for harsh high‑temperature and high‑pressure working conditions.

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Head Office Address: Viale del Lavoro.19,20003 Casorezzo Ml. Italy Testing zone
Address:Via S. Giovanni Bosco S.n.c.70020 – Poggiorsini (BA) – ITALY

EMAIL: andant@sanjingvalve.com
PHONE: +39 389 949 9067
WHATSAPP: +39 389 949 9067

Branch Office Address: Dongou Industrial Zone, Oubei Street, Yongjia Wenzhou City, Zhejiang Province China Testing zone 2 Address:No. 205, Linwu Road, Sanqiao Industrial Zone

What exactly is the relationship between SANJING Valve Company and SJ Valvole S.R.L.?

SANJING Valve Company is the main manufacturing company, responsible for valve production, quality control, testing, and technical support. SJ Valvole S.R.L. serves as SANJING’s Italian office, supporting its business development, customer communication, and commercial activities in Italy and the European market.

Integrated Manufacturing and European Service

The two operations work together to provide customers with coordinated manufacturing and local market support:

Manufacturing & Quality Control: SANJING Valve Company manages valve manufacturing, inspection, testing, and quality control at its production facilities.

European Market Support: SJ Valvole S.R.L. supports customer communication, commercial coordination, and business development in Italy and other European markets.

Project Coordination: Customer requirements, technical specifications, documentation, production, and delivery can be coordinated between the Italian office and the manufacturing team.

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