KITZ XJ Series aluminium butterfly valves: Featured with unique interchange ability of the neck design (U.S.P No. 6676109), for accommodation of various piping designs, piping positions and installation environments.

The butterfly valve, in comparison to other valves, has structural advantages such as simple construction, compact, lightweight, and being piping work friendly, it has various functional advantages, such as suitability for automated operation by open/close with 90 Degree action and excellent fluid controllability, so that it is adopted in vast fields.

KITZ Butterfly Valves

KITZ established a rich product line-up by preparing systematic series in accordance with application of butterfly valves in order to meet a wide variety of user needs.

This newly developed “New Innovation” has made it possible to get “Higher Inner Dia in same dia pipe”, which can give more flow, at lesser time than any other piping technology. Along with the existing unique feature, i.e. Glass Reinforcement Technology to Flame Retardant V2 Technology, we have added two more merits as more flow due to higher inner dia and UV resistant with Carbon content with Internationally recognised colour coding “blue”. Our continuous blue-black strips on the pipe with its own significance are our Trademarks and applied for design copyright to make this our unique identification.

Standard Materials

Parts Materials
Body Aluminium die-cast/equivalent ASTM B85-84-383.0
Neck 304 stainless steel
Stem Equivalent ASTM A276 type 410
Disk A351 Gr. CF8M
O-ring EPDM
Rubber seat EPDM
Bottom stem Equivalent ASTM A276 type 410
Bearing Metal backed PTFE (Size 10” and 12”)
Polyphenylenesulfide (10XJMEA: size 1 ½” to 8”)
Bronze: CAC401C (PN16XJME: size 2” to 8”)

Features of KITZ Butterfly Valves

Choice of two neck designs

Two types of neck designs are available for versatile applications. The one is long neck type and second is short neck type.

Easy valve to flange centring

The light weight of the die cast aluminium valve body eases valves-to-flange centring work on mounting valves on pipelines.

Wide range of service applications

Austenitic stainless steel discs and EPDM rubber seats can handle many different types of line fluid without risk of corrosion.

Stabilized operating torque

A pair of stem bearing assembled around the top and bottom stems prevents stem galling and stabilizes the valve operating torque for smooth and trouble free disc rotation.

On the spot actuator assembly

The actuator mounting pads of all necks are designed in conformity with ISO 5211 requirements for direct on site mounting of actuators that are provided with ISO 5211 valve mounting flanges.

Prevention of dew condensation (Long neck type)

A long stainless steel neck blocks transfer of fluid heat to the valve operating device, so no insulation is needed on the operating device. Dew condensation is also minimized for gear operated valves used in cold water service.

Rust prevention

The main parts such as the stems, discs, necks, neck connectors and endplates and small parts such as stopper plates, washers and bolting are all made of stainless steel for high grade rust prevention.

S-shaped spherical disc for sealing performance (patented)

KITZ’s original cross sectional S-shaped valve discs with spherical surfaces make evenly tight contact with rubber liners for excellent sealing performance with reduced operating torque. Complete 360* shut-off mechanism help to extend the service life of rubber liners. (Size. > 2 Inches)

Carefully designed KITZ EPDM seats have unique features that ensure their functional stability, high sealing performance and long life:

• Self-reinforced ribbing
• Wide disc seating contact
• Dual stem seal bearings

  • 1. Wide disc seating contact for high sealing performance.
  • 2. Reinforced ribbing minimizes valve operating problems such as distortion, skidding and exfoliation of rubber liners caused by line pressure load and friction with metal discs.
  • 3. Stem seal bearings are assembled on the top and bottom stems for stable sealing.
  • 4. Gasket less flange sealing contact for easy valve mounting.

Types of Butterfly Valves

I. Long Neck Butterfly Valve

• A long stainless steel neck reduces conductivity of the fluid heat for prevention of dew condensation
• Availability of valve body and neck insulation
• Choice of actuators for automated valve operation

• Building utilities
• Piping networks for cold water, hot water and other water supply

Valve Insulation:
• Insulation is recommended for area in blue

Dew Condensation Test:
Sample of KITZ XJ series butterfly valve equipped with long necks (KITZ Product Code: G-10XJMEA) were tested at the KITZ laboratory under the conditions listed below. The lower surface temperatures of gear boxes, ambient temperatures and ambient humilities were measured as the variable functions. The dew conditions were measured as the variable functions. The dew condensation boundary was estimated as illustrated below.

Test Condition:
1) Line fluid: +5*C cold water
2) Atmospheric temperature range: +20*C to +40*C
3) Valve insulation: 50mm glass wool (JIS A 9501) around the test valve with gear boxes exposed to open air

Types of long neck butterfly valves

• Lever operated
• Gear operated

II. Short Neck Butterfly Valve

• Suitable for piping in a limited space
• Choice of actuator for automated valve operation

• Building utilities
• Plant facilities
• Water treatment facilities
• Industrial machinery operation