MVA - Model HTB -Ball Valves

Carbon Steel - Stainless Steel

Type HTB, for High Temperature

Rating DIN 2401 PN 40, PN 63 and PN 100

Rating ASME B16.34 Class 300 and 600, full rated

Size DN 15 to DN 100 - W to 4"

- This Valve is ONE WAY Valve. Do ensure that the flow direction is the same showed by the arrow on the body.

- Temperature for continuous service uptoS50°C(1022°F).

- Size: %" to 4"

- Design Standards:

ASME B16-34, B16-5

B16-11 B16-25

MSSSP72. BS5351

DIN 240*1. DIN 3239

- Fire Safe: API 6FA and BS 6775 certified

- TA LUFT certified

- Split body, three piece

- Floating Ball

- Body Seat: Patented Metal / Graphite Compound

- Packing Adjustable Graphite Long Life Packing

- Gland: Flangec Type - One Piece bushed

- Stem: Anti blow-out

- Antistatic Device: Design is intrinsically Antistatic

- Torque Low Torque due to Special Packing Materia and Design

- Every valve, even if already installed, can be completed with an actuator-Valve actuator attachment according to ISO 5211

- Connections"

- Threaded NPT to ANSI B 1.20 1 -SW toANSIB16.11

- BW toANSIB16.25

- BW to DIN 3239

- Flanged:

According to European Standards

(UNI, DIN.AFNOR etc.)PN40

Flanges are supplied raised faced to UNI 2229, drilled, Face to face dimension (A) to DIN 3202-F1

According to European Standards

(UNI. DIN. AFNOR. etc.) PN 63 and PN 100

Flanges are supplied raised faced to UNI 2229. drilled, Face to face dimension (A) to DIN 3202-F2

According to Americar Standard

ASME BT6.34 Class 300 

Flanges are supplied R.F. drilled to ASME B16.5 Face to face dimension (A) to ASME B16.10

According to American Standard

ASME B16.34 Class 600

Flanges are supplied R.F. drilled to ASME B16.5 Face to face dimension (A) to ASME B16.10

The main characteristics of HTB ball valves are the following:

- suitable for any kind of fluid compatible with graphite. Particularly suitable for application on water/steam even with high pressure drop.

- Nearly indefinite bubble tigH seat tightness throughout the full range of operations.

- High resistance to erosion.

- Very effective in the handling of abrasive containing fluid and any dirty media. The alternating metal-graphite layers of the seat sweep the ball surface cleaning it during every open-close operation

- Packing characteristics avoids any measurable fugitive emission in the environment

- Maintenance Free. However if. for any reason, maintenance is ever required, the seat replacement is simple and inexpensive thanks 10 the low cost of the seat rings and their ability to aulo-adapt to the ball. Thus eliminating the need to replace the complete ball and seat assembly as it is normally done in metal seated ball valves.

- FIRE TEST - Certificate No. MLN9901225/1-2.

It Is important to remark that the breakaway torque difference before and after fire test is negligible.

- TA LUFT TEST - Certificate No 86T409 To be remarked:

- No need of packing retighlening during tests, although allowed.

- Checked leakages of some order of magnitude inferior to the admitted ones.

- Test has been performed at temperature of 427 °C (800 °F), limit imposed by the valve body material.

More tests at temperature of 550 *C, with different body material, have been performed with satisfactory results.