One.Product data:

D671FP-10Q Pneumatic PTFE seat butterfly valve

a.Features:

(1) 90° movement for full open/close position.

(2) Excellent control characteristics.Tight shut-off even after innumerable operations.

(3) Installation cost considerably reduced because of very low weight and compact design.

(4) Longer life and reliable service with minimum component wear.

(5) Renewable seats. No supplementary gasket required with the adjacent pipework.

(6) Body & Stem totally protected from service fluid.

b.Design consideration :

NO. Name Standard

1 Design Standard DIN 3354, API 609(AWWA C504)

2 Face to Face DIN 3202, ASME B16.10

3 End Flange DIN 2543-2545, ASME B16.5(ASME B16.7)

4 Inspection and Test DIN 3230,API 598 (API600)

c.Material could be:

Item Part Name Materials

1 Body :SS304/SS316

2 Stem :2Cr13/SS304/SS316/SS316L

3 Taper Pin :Stainless Steel304

4 Seat :Stainless steel 304

5 Disc :Stainless steel304

6 O-Ring :NBR/PTFE/BRONZE/EPDM

7.Applicable medium: Water, liquids, gas, oil, powder, steam, acid-base medium, etc.

8.Actuator:single pneumatic,double pneumatic

Principle of Single Acting Actuator (Spring Return)

Air to port A forces the pistons outwards, causing the springs to compress, 

The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the

 pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Air to port B forces the pistons outwards, causing the springs to compress, 

The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the 

pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Principle of Double Acting Actuator

Air to Port A forces the pistons outwards, causing the pinion to turn 

counterclockwise while the air is being exhausted from Port B.

Air to Port B forces the pistons inwards, causing the pinion to turn 

clockwise while the air is being exhausted from Port A.

Air to Port A forces the pistons outwards, causing the pinion to turn 

clockwise while the air is being exhausted from Port B.

Air to Port B forces the pistons inwards, causing the pinion to turn 

counterclockwise while the air is being exhausted from Port A.

Two.Related products

Patent products are the core competitiveness of enterprises. Products including butterfly valves, gate valves, ball valves, check valves, globe valves, Y type strainer, water power controlling valves and pressure regulating valves. With pressure rating ranging from 0.6Mpa to 10Mpa and port size from DN40 to DN3000. These valves can be operated manually, electrically, pneumatically, hydraulically, and elector-hydraulically, with reference to ANSI, API, DIN, BS, JPI, and JIS standards and China's GB standards. 

Three.Company profile 

Tianjin Nbestvalve Co., Ltd. was established in 2002, headquartered in No.21,No.1 Building, Ronghui Business Zone, Zhongguancun technology Park, Binhai New District, Tianjin, China. With the rapid development of the most dynamic Chinese Bohai Economic Rim, Our company, production, sales and manufacturing test capabilities, with independent import and export rights, is a science, industry and trade as one of the group enterprise.

Four.Aplication Area

a. Domestic sewage treatment.

b. industrial wastewater treatment.

c. industrial irrigation treatment.

Five.Packing and Freight

Six.FAQ

Q: Are you trading company or manufacture?

A: We are factory located in Tianjin, China.

Q: What's your product range?

A: We specialize in product butterfly valves, gate valves, check valves, Y type strainer, water controlling valves,motorized valves,pneumatic valves,hydraulic valves and other pipe accessories.

Q: What's execution standard?

A: ISO/ANSI/DIN/JIS/EN/GOST standard.

Q: What's your strong product?

A: Concentric butterfly valves, grooved butterfly valves, dual plate check valves.

Q: Do you provide sample? Is it free or extra?

A: Yes, we could offer the sample for free charge but do not pay the cost of the freight.

Q: How long is your delivery time?

A: Generally it is 7 days if the good are in stock, or it is 20 days if the goods are not in stock, it is according to the quantity.

Q: What is your terms of payments?

A: Payment ≤10000 USD, 100% in advance. Payment ≥10000USD, 30% T/T or other ways in advance, balance before shipment.

Seven.Contact us