Butterfly Valve With Pneumatic Actuator Size: 1"-36" (DN15 - DN900) Class: 150#-1500#

Butterfly Valve With Pneumatic Actuator Size: 1"-36" (DN15 - DN900) Class: 150#-1500#

price

Model NO. Pneumatic Butterfly Valves

Delivery

Minimum Order 0

Supply Ability

Country of Origin

Stock Time Day

Size: 1"-36" (DN15 - DN900)
Class: 150#-1500#.
CS / SS / Alloys / Monel / Hastalloys / Bronze MOC
Actucation - Hand Lever / Gear Box / Actuator - Pneumetic, Hydraulic, Electrical
Wafer Type / Lug Type / Flange ends types
EPDM / Nitrile / PTFE / Rubber Lined & Seated
Metal to Metal and Metal to soft seat

Quantity

Butterfly Valve of valve

SJ is one of the leading Butterfly Valve Manufacturer A butterfly valve 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 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.This SJ valve is a pneumatic butterfly valve designed for efficient on-off and flow control in industrial piping systems. Equipped with a pneumatic actuator, butterfly disc, flange connection and reliable seat sealing, this valve enables quick operation, compact installation and automated flow regulation. It is suitable for water treatment, HVAC, chemical processing and general industrial pipeline applications.

Main Technology Parameter
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
Packing			Flexible Graphite,Fluorine Plastic

Pneumatic Butterfly Valves vs Mechanical Butterfly Valves

Brief Description: Pneumatic and mechanical butterfly valves are two common actuation types for butterfly valves. Pneumatic versions rely on compressed air to drive disc rotation, featuring fast action, suitable for automated process systems. Mechanical (hand‑operated/manual gear) butterfly valves work by handwheel or gear reducer, no air source needed, ideal for on‑site manual operation for simple pipelines.

Item	Pneumatic Butterfly Valves	Mechanical(Manual Gear) Butterfly Valves
Drive Source	Compressed air	Manual handwheel / gear reducer
Operation Speed	Fast open‑close speed	Slow, depends on manual turning
Automation	Supports remote control & signal feedback	Only local on‑site operation
Auxiliary Requirement	Need air supply pipeline	No extra power / air source
Typical Application	Water treatment, chemical automatic pipeline	Small‑medium site, non‑automated lines
SJ Note	SJ pneumatic butterfly valves match solenoid valve & limit switch optional	SJ mechanical butterfly valves with robust gearbox for large‑torque working

Main connection dimensions
DN		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)
DN		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)

FAQ for Pneumatic Butterfly Valves

Q1: What accessories can be fitted on pneumatic butterfly valves?

A: Common optional accessories include solenoid valve, limit switch box, air filter‑regulator, and positioner. Solenoid valve controls air on‑off; positioner realizes 4‑20mA modulating throttling; limit switch feeds back valve open/close status to control system.

SJ Conclusion: SJ pneumatic butterfly valves support full set of above accessories for automated working conditions.

Q2: What air pressure is required for pneumatic butterfly valve normal operation?

A: Standard working air pressure range is 0.4‑0.6 MPa. Too low air pressure may cause insufficient torque and incomplete valve closing; too high pressure will damage the actuator diaphragm. Dry and clean compressed air is recommended.

SJ Conclusion: SJ pneumatic actuators are well‑calibrated for 0.4‑0.6MPa standard plant air supply.

Q3: Pneumatic butterfly valve vs electric vs manual gear butterfly valve, how to select?

Pneumatic butterfly valve: Fast open‑close speed, suitable for explosion‑proof sites, needs compressed air source.
Electric butterfly valve: No air source required, supports remote modulation, slower actuation speed.
Manual gear butterfly valve: Low cost, only local operation, for infrequent switching pipelines. Choose pneumatic if you have air source and need fast switch or explosion‑proof performance.
SJ Conclusion: SJ suggests pneumatic butterfly valves for explosion‑risk & frequent‑switch automated pipelines.

Q4: Can pneumatic butterfly valves work for corrosive medium?

A: Yes. Corrosion resistance depends on disc and seat material. EPDM, Viton seat and coated/stainless steel disc can handle most corrosive fluids. For strong corrosive media, special PTFE lining is required. Standard carbon steel disc is not for corrosive service.

SJ Conclusion: SJ provides custom disc & seat material options for corrosive‑media pneumatic butterfly valves.

Recommend Products

Message Content

Country

Fax

WS&BOTIM

Company Name

Name

Pressure Range

Material Grades

End Connections

Operation

Size Range

File

You can only upload 1 attachments at most
Supported formats: PDF,JPG,PNG,EXCEL,WORD,STP,IGS,DWG,DXF,PDF,STEP
The size of the uploaded file should not exceed 10MB

SEND INQUIRY >

Talk To Our Team

Have a question for our team? Get in touch with the details below.

BOTIM

+39 389 949 9067

PHONE

+39 389 949 9067

andant@sanjingvalve.com

+39 389 949 9067

CONTACT INFORMATION

WORKING HOURS

Sitemap

Contact Us

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.

VACUUM VALVE

Safety Relief Valves

Control Valve

Level Gauge