Cast Iron Rubber Wedge Non-Rising Stem Gate Valve
Insecticide Single Formulation Insecticides can be divided into biological sources and chemical synthesis. Insecticide Single Formulation,Vegetable Root Knot Nematode,Aphids Leafhoppers Planthoppers,Contact Stomach Poisoning Fumigation Anhui Meiland Agricultural Development Co., Ltd , https://www.meilandagro.com
1. Standards Compliance:
- Design &Â Manufactured to API 600, ASME B16.34 or DIN3202
- P.T Ratings to ASME B16.34
- Face to Face dimensions to ASME B16.10
- Flanged Ends to ASME B16.5, ASME B16.47
- Butt-weld Ends to ASME B16.25
- Valves Marking to MSS SP-25
- Inspect &Â Tested to API 598
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2. Specification
» Sizes Ranges from 1 1/2" to 32"
» Pressure Ratings from Class 150 to Class 800, PN10 to PN20
» Structured in Bolted Cover, Outside Screw and York, Optional Non-rising Stem
» Ends Connections in Flanged R.F or RTJ, Butt-welded and Scoket weldedÂ
» Actuations can be equipped with Handwheel, worm gear , Electric / Pneumatic or Hydraulic Actuators
» Optional Bypass system, Live Loading Packing & O-ring Seal available upon request.
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Item
Material
Symbol
Body
Cast Iron
ASTM A126 CL.B GG25
Ductile Iron
ASTM A536 65-45-12 GGG40
Carbon steel
ASTM A216 WCB
Stainless steel
ASTM A351 CF8/CF8M
Disc
Ductile Iron
ASTM A536 65-45-12 GGG40
Carbon steel
ASTM A216 WCB
Stainless steel
ASTM A351CF8/CF8M
Bronze
ASTM B148 C954
Stem
Stainless steel
ASTM A182 304.316.410
Alloy
Monel K500
Seat
Elastomer
Working temperature
EPDM
-15°C~140°C
NBR
-10°C~80°C
VITON
-20°C~150°C
PTFE
-15°C~205°C
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7. Competitive Prices: We are the manufacturing company which not only has our own manufacturing workshop, but the casting company as well. We provide the straight factory price and service to our customer.Â
INQUIRY
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We offer a reasonable price with our best products and best service.
If you want to know more about our company or products, please contact us.
Biogenic insecticides include: â‘ preparations of effective insecticidal ingredients extracted from higher plants, such as natural pyrethrin, rotenone, etc.;
â‘¡ Insecticides made from living organisms mainly include fungi (such as Beauveria bassiana), bacteria (such as odontobacillus) and viruses (such as Bacillus borer).
â‘¢ Insect physiological active substances, such as pheromones.
Chemical synthetic pesticides mainly include: Inorganic insecticides (e.g. White arsenic As2O3, Sodium fluosilicate, Na2SiF6, etc.), organochlorine insecticides (such as chlordane, BHC, DDT, toxaphene, etc.), organophosphorus insecticides (such as dichlorvos, trichlorfon, Dimethoate, malathion, chloraphenone, etc.), carbamate insecticides (such as carbaryl, sulfenocarb, etc.) and pyrethroid insecticides (such as fenvalerate, cypermethrin, etc.).
The main ways in which insecticides can kill pests are:
â‘ Touching agents enter the body through the epidermis of the pest and play a role, causing the pest poisoning and death;
â‘¡ Gastric toxic agents are absorbed by the stomach and intestines directly after being eaten by pests, causing them to die of poisoning;
â‘¢ Some fumigation drugs are volatile, and their vapors enter the body through the respiratory tract of pests, causing them to die of poisoning;
(4) ingestion drugs are first absorbed by the crop, and conducted to the whole plant, when pests ingestion, eating crops, so that it died of poisoning.