JIS Butterfly Valve

JIS Butterfly Valve

This butterfly valve series has many of the design features and benefits of the smaller valves, such as high Cv ratings, minimum parts exposed to the line media, greater reliability and a proven record of long service life.

Product Details

JIS Butterfly Valve

Specifications (butterfly valve)

  • Size Range:S32/33 - 22" - 36" (550mm - 900mm)
    S35/36 - 22" - 120" (550mm - 3000mm)

  • Body Style:Full Flanged

  • Temperature Range:- 20°F to 250°F (-29°C to 121°C)

  • Pressure Ratings:32/35 Bidirectional Bubble-tight Shutoff: to 75 psi (5.2 Bar)
    33/36 Bidirectional Bubble-tight Shutoff: to 150 psi (10.3 Bar)
    35 Dead-End Service Shutoff: to 30 psi (2.1 Bar)
    36 Dead-End Service Shutoff: to 50 psi (3.4 Bar)
    Body (CWP): 250 psi (17.2 Bar)

  • Body Materials:Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel

  • Disc Materials:Nylon 11 Coated Ductile Iron, Aluminum Bronze, Stainless Steel, Duplex Stainless Steel, Super Austenitic Stainless Steel, Hastelloy®*, Monel

  • Stem Materials:Stainless Steel, Duplex Stainless Steel, Super Austenitic Stainless Steel, Monel

  • Seat Materials:BUNA-N, EPDM, FKM*

  • Applications:Wastewater, Seawater

Components and Materials butterfly valve
1valve BodyCast Iron
Ductile Iron
Carbon Steel
316 Stainless Steel
2valve DiscNylon 11 Coated Ductile Iron 
Nickel Aluminum Bronze 
316 Stainless Steel
304 Stainless Steel
Aluminum Bronze
Duplex Stainless Steel
Super Austenitic Stainless Steel
3valve Stem416 Stainless Steel
304 Stainless Steel
316 Stainless Steel
17-4 PH Stainless Steel
Duplex Stainless Steel
Super Austenitic Stainless Steel
4valve Seat
Valves 54"(1400mm) and larger are provided with bonded seats
5valve PackingBUNA-N1
6valve BearingsLubricant Impregnated Bronze
PTFE Encapsulated Stainless Steel
7valve Thrust BearingBronze1



Shall be one piece double flanged design.

Flange hole drilling per international flange standard as specified.

A non-corrosive bushing and a self-adjusting stem seal shall be provided. No field adjustment shall be necessary to maintain optimum field performance.


Disc edge and hub on metal discs shall be spherically machined and hand polished for minimum torque and maximum sealing capability.


Shall be one piece design

Disc-to-stem connection shall be an internal connection design with no possible leak paths in the disc-to-stem connection. External disc-to-stem connections such as disc screws or pins are not allowed.

Stem shall be provided with blow-out proof stem retention system to assure full retention of the stem in the unlikely event of an internal stem failure.


Shall be tongue-and-groove seat with a primary hub seal and a molded flange O-ring suitable for weld-neck and slip-on flanges.

The seat shall totally encapsulate the body isolating it from the line media and no flange gaskets shall be required.


Valve shall be tested to 110% of the rated pressure.

Pressure Ratings:

Valve shall be rated for bubble-tight shut-off at pressure rating shown below.

All Resilient Seated Series 32 valves (with Standard Disc):

22" - 36" (550mm-900mm) 75 psi (5.2 Bar)

All Resilient Seated Series 33 valves (with Standard Disc):

22" - 36" (550mm-900mm) 150 psi (10.3 Bar)

We company have other valves: gate valve, check valve, ball valve, butterfly valve, safety valve, globe valve, plug valve, etc....

Welcome to inquiry! our valves


Website : https://www.kemus-valve.com
Elaine Zheng
(Sales Director)
Email: sales1@kemus-valve.com
Tell: +86 0592 7103069
Phone: +86 18359108305
WhatsApp: +86 18359108305
Skype: Homealine93

Wechat:  +86 18359108305

webwxgetmsgimg (1)


You Might Also Like