• Fugitive emissions control for flammable and non-flammable applications.
• Valve fugitive emissions capability third-party certified to ISO 15848-1.
• Machined ISO actuator mounting pad.
• RPTFE seal relieves concern over product contamination.
• Fire test certified to API 607 6th edition and ISO 10497.
• Lower operating torque for ease of operation and reduced actuator cost.
• Positive position indication.
• Blowout-proof shaft.
• NACE MR0175 available on request.
• Locking device is available.
• Anti-Static Device.
• Manufactured under ISO 9001 certified quality system.
• Primary O-ring Seal.
• CE marking PED 2014/68/EU as standard. Available on request.
• Various seat types are available.
In addition to standard E-seat, various seats are available in following variety. Each seat
option will meet a wide range of performance, suitable for many applications.
- PTFE + 15% Glass Fiber
- PTFE + 25% Carbon Fiber
- Modified PTFE
- Modified PTFE + 25% Carbon Fiber
- PTFE + 50% SS
- PEEK
- UHMWPE
* Please refer to the Pressure-Temperature rating.
• Anti-Static Plunger - Positive connection of ball and stem to valve body, preventing static electricity build-up.
• Blowout-Proof Stem - Internally fitted back-seated stem prevents blowouts under pressure and also functions as the backseat for stem sealing.
• Locking Device* - Locks valve in open and closed positions to prevent accidental valve operation.
• Double “D” Stem Design - Ensures lever can only be fitted in line with flow direction for positive open/closed indication.
• ISO 5211 Actuator Mount - Integral actuator mounting pad is standard for all modern pneumatic and electric actuators.
FIRE SAFE STATEMENT FOR SEAT
251
ITEM
PART NAME
STAINLESS STEEL
CARBON STEEL
1
Body
CF8M
WCB
2
End Cap
CF8M
WCB
3
Seat
PTFE+15% GF
PTFE+15% GF
4
Ball
CF8M
CF8M
5
Stem
SUS 316
SUS 316
6
Body Seal
316L + GRAPHITE
316L + GRAPHITE
7
Gasket
PTFE
PTFE
8
Packing
GRAPHITE
GRAPHITE
9
Stem Bearing
PTFE
PTFE
10
Gland Flange
SUS 304
SUS 304
11
Hex Bolt
A193-B8
A193-B8
12
Gland Nut
SUS 304
SUS 304
13
Stud
A193-B8M
A193-B7M
14
Nut
A194-8M
A194-2HM
15
Stop Plate
SUS 304
SUS 304
16
T-Block
WCB
WCB
17
Disc Spring
SS 304
SS 304
18
Snap Ring
SUS 420
SUS 420
19
Stop Screw
SS 302
SS 302
20
Stop Nut
SS 304
SS 304
21
Hex Bolt
SUS 304
SUS 304
22
Pipe
CS+Zn Plated
CS+Zn Plated
23
Spring
SUS 316
SUS 316
24
Static Device
SUS 316
SUS 316
25
Pipe Cover
VINYL
VINYL
26
O-ring
VITON
VITON
* We reserve the right to modify the design / specification without previous notice for better quality.
251 (Class 150)
253 (Class 300)
256 (Class 600)
* We reserve the right to modify the design / specification without previous notice for better quality.
251 (Class 150)
253 (Class 300)
256 (Class 600)
* We reserve the right to modify the design / specification without previous notice for better quality.
251 & 253
256
Remark:
1. It is recommended that the appropriate seat material, providing a higher pressure & temperature, is selected, if you feel the standard material is borderline and you prefer a larger safety allowance.
2. For steam service, options available are PEEK, PTFE+50%SS, or Metal seat, depending on the service application.
3. Final selection of seat material is the user's choice, experience & responsibility.
4. Solid Lines-Continous Temperature Dotted Lines-Intermittent / Peak Temperature
