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PK Valve & Engineering
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PK Valve & Engineering
About Inc
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PK Valve & Engineering
About Inc
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PK Valve & Engineering
About Inc
Let me introduce you
PRODUCTS
Asia, the Middle East, Europe, North and South America,
in the field of industrial valves such as Africa
It's a global company that leads the global market
Product Description
Product Specifications
MATERIAL
Materials suitable for working condition must be adopted for low temperature VALVE.
Especially in petrochemical industry, the types of fluids to be processed are different according to each section even in the same plants.
At the same time, the temperatures used are also different.
A full consideration must be paid to the selection of material.
BODY AND BONNET
As for the materials constituting the low temperature valve, special consideration must be paid to the materials used at pressure parts as in the case of body and bonnet.
BODY MATERIAL |
SERVICE TEMPERATURE |
BOLT |
NUT |
|
℉ |
℃ |
|||
CARBON STEEL (GRADE LCB) |
-50 |
-46 |
A320 GR. L7 |
A194 GR. 4 |
C-1/2 Mo (GRADE LC1) |
-75 |
-59 |
A320 GR. L7 |
A194 GR. 4 |
2 1/2 NI (GRADE LC2) |
-100 |
-73 |
A320 GR. L7 |
A194 GR. 4 |
3 1/2 NI (GRADE LC3) |
-150 |
-101 |
A320 GR. L7 |
A194 GR. 4 |
TYPE 304 (GRADE CF8) |
-425 |
-254 |
A320 GR. B8 |
A194 GR. 4 |
TYPE 304 (GRADE CF3) |
-425 |
-254 |
A320 GR. B8 |
A194 GR. 4 |
TYPE 316 (GRADE CF8M) |
-425 |
-254 |
A320 GR. B8 |
A194 GR. 4 |
TYPE 316L (GRADE CF3M) |
-425 |
-254 |
A320 GR. B8 |
A194 GR. 4 |
TRIM
Following the body and bonnet, selection of materials for main parts such as stem, seat ring, and gland is very important. We adopt austenite stainless steel.
PACKING
Teflon or other plastic packing protecting from shinkage by large cloumn of insulating gas.
SEATING SURFACE
Stellite 6 for all medium and high pressure application prevents seizing and galling.
BOLT AND NUT
Material for bolts at low temperatures requires especially strength. Therefore, rigidity at low temperature is demanded and brittleness at low temperature of steel material can be improved generally by heat treatment. We use it according to ASTM standard.
TABLE OF LIQUEFIED GASSES
TYPE |
BOILING POINT |
|
℉ |
℃ |
|
NATURAL GAS, LNG |
- 270 |
- 168 |
METHANE, CH4 |
- 258 |
- 162 |
OXYGEN, O2 |
- 296 |
- 183 |
ARGON, AR |
- 303 |
- 186 |
CARBON DIOXIDE, CO2 |
- 314 |
- 192 |
NITROGEN, N2 |
- 320 |
- 196 |
HYDROGEN, H2 |
- 423 |
- 253 |
HELIUM, HE |
- 452 |
- 269 |
PRODUCTION MATERIALS
ASTM : A351-CF8, CF8M, CF3, CF3M or Equivalent
UNIT : NPS
|
150 |
300 |
600 |
900 |
1500 |
2500 |
GATE |
2 - 60 |
2 - 48 |
2 - 36 |
2 - 24 |
2 - 16 |
2 - 16 |
GLOBE |
2 - 36 |
2 - 36 |
2 - 30 |
2 - 20 |
2 - 12 |
2 - 12 |
SWING CHECK |
2- 48 |
2 - 48 |
2 - 36 |
2 - 24 |
2 - 16 |
2 - 16 |
BALL |
1/2 - 60 |
1/2 - 60 |
1/2 - 48 |
1/2 - 36 |
1/2 - 24 |
1/2 - 16 |
BUTTERFLY |
2 - 52 |
|
|
|
|
|
GATE VALVE

END CONNECTION
- R.F FLANGED ENDS TO ASME B16.5
- B.W. ENDS TO ASME B16.25
- R.T.J FLANGED ENDS TO ASME B16.5
- SIZE 26" AND LARGER, FLANGED ENDS ACCORDING TO ASME B16.47 SER.A OR SER.B
- CONSULT US FOR LARGER SIZE
GLOBE VALVE

END CONNECTION
- R.F FLANGED ENDS TO ASME B16.5
- B.W. ENDS TO ASME B16.25
- R.T.J FLANGED ENDS TO ASME B16.5
- SIZE 26" AND LARGER, FLANGED ENDS ACCORDING TO ASME B16.47 SER.A OR SER.B
- CONSULT US FOR LARGER SIZE
SWING CHECK VALVE

END CONNECTION
- R.F FLANGED ENDS TO ASME B16.5
- B.W. ENDS TO ASME B16.25
- R.T.J FLANGED ENDS TO ASME B16.5
- SIZE 26" AND LARGER, FLANGED ENDS ACCORDING TO ASME B16.47 SER.A OR SER.B
- CONSULT US FOR LARGER SIZE
BUTTERFLY VALVE

Usage
PK Valve & Engineering Co., Ltd. (now referred to as the 'Company') values customers’ personal information and complies with the Act on the Promotion of Information and Communications Network Utilization and Information Protection. Through the privacy policy, the company informs you of the purpose and method of using the personal information you provide and what measures are being taken to protect your personal information. If the company revises the privacy policy, it will be notified through the website notice (or individual notice).
※This policy is effective October 1, 2022.
The company collects a minimum of personal information so users can conveniently use the service through membership registration.
If the users want to use the service, they must enter the necessary personal information, and the company allows users to access all services though they do not enter the optional items.
1) Service use: e-mail or mobile phone number
The company has prepared a procedure for users to click the 'I agree’ button for the contents of the privacy and youth protection policy or terms of use. When users click the "I agree" button, the company considers them to agree.
① The company uses users’ personal information within the range notified in 「Purpose of Collection and Use of Personal Information」 and does not use it beyond this range or provide it to others or other companies. In particular, the company will operate and provide personal information with care in the following cases.
② The notice and consent method are notified at least ten days in advance through the message on the initial screen of the online homepage and individually told at least once through e-mail, etc.
③ The following are exceptions.
Notification may not be unavoidable due to legal grounds. We will do our best not to provide information indiscriminately against the original purpose of collection and use.
① Your data will be destroyed when the purpose of collecting or providing personal information is achieved as follows. However, suppose it is necessary to retain it for a certain period for reasons such as confirmation of the relationship of rights and obligations related to transactions as followed by the provisions of relevant laws such as the Commercial Act. In that case, the information is retained for a certain period.
② If you request to view the transaction information held with your consent, the company will take measures so that it can be viewed/confirmed without delay.