1. Start with your working requirements

Before you ask for a quote, write down:

• Pipeline size(s) and quantity per size
• Flange standard and pressure class of the mating flanges (for example ANSI 125/150, PN10, PN16 or 10K)
• Medium and working temperature
• How the valve will be operated: by hand, by gear or by actuator
• Body style needed for the installation: wafer or lug

The product information states that buyers can choose materials from the published materials list and can mark the medium and temperature on the order, and that the company can select materials instead. It also says that when the medium and temperature are special, buyers should consult the company. Including the medium and temperature in your enquiry is therefore the most direct way to get a quote that matches your service.

2. Size range: check it before anything else

The Series F170 product page lists sizes 1½″ to 24″. The page for the item titled "Wafer Type Butterfly Valve" gives 2″ to 12″ in its summary, but its dimension table starts at 1½″ (40 mm) and ends at 12″ (300 mm). Because the two pages differ, confirm the exact size range for the wafer body you need when you request a quote.

Common wholesale enquiries such as a 6″ (150 mm) or 10″ (250 mm) wafer butterfly valve are within the published size range. Both pages list dimensions for these sizes.

When F170 does not apply: if your line is larger than 24″, F170 does not cover that size. The Series F101 butterfly valve covers 1½″ to 48″ and is the alternative for those sizes.

3. Flange compatibility and integration fit

Series F170 is described as compatible with GB, ANSI, DIN, BS and JIS flanges. The published dimension table has separate columns for ANSI 125/150, PN10, PN16 and 10K flange connections. When you request a quote, state the flange standard and class so the supplier works from the correct dimension row.

The series is described as designed to comply with MSS SP-67, BS5155 and API 609. This is a design reference stated in the product information, not a certification. Ask for any documents your project needs separately.

The product pages publish dimension tables by size. Ask for the dimensional drawing that defines each column letter, and check face-to-face and overall dimensions against your piping layout before you confirm an order.

4. Wafer type or lug type body

Series F170 is available with a wafer type and lug type body. The Series F170 Lug Type Butterfly Valve page lists bolt specifications for each flange standard (for example, 4-⅝″-11 for ANSI 125/150 and 4-M16 for PN10/PN16/10K at 2″). If you are comparing wholesale wafer and lug type butterfly valves, specify the body style clearly, because it changes the item being quoted.

5. Operator: handle, gear or pneumatic actuator

The published options for F170 are:

If you need a pneumatic wafer butterfly valve, the actuator option is available across the full F170 size range. Larger valves need a gear operator or actuator.

6. Body and trim materials

The product description says that a one-piece thru shaft ensures dependability and that the stem drives the disc. It also says that "many body/trim combinations" are available. The published materials list includes:

• Body: cast iron (ASTM A126 CL. B, DIN1691 GG25, EN 1561 EN-GJL-200, GB12226 HT200); ductile cast iron (ASTM A536 65-45-12, DIN 1693 GGG40, EN1563 EN-GJS-400-15, GB12227 QT450-10); stainless steel (ASTM A351 CF8, CF8M, CF3, CF3M); carbon steel (ASTM A216 WCB)
• Stem: zinc plated steel; stainless steel ASTM A276 Type 316, 410, 420; ASTM A582 Type 416
• Disc: nickel-plated ductile cast iron; stainless steel (ASTM A351 CF8, CF8M, CF3, CF3M; EN 1.4408, 1.4469, 1.4501); aluminium bronze ASTM B148 C95400
• Seat: NBR, EPDM, Neoprene, PTFE, Viton
• O-ring: NBR, EPDM, Neoprene, Viton
• Bushing: PTFE, Nylon, lubricated bronze

The published information does not give temperature or pressure ratings for each seat or body material. Do not assume a material fits your medium from its name alone. State the medium and temperature, and consult the supplier when your conditions are special.

7. A practical enquiry checklist

To get a comparable wholesale wafer type butterfly valve price, send:

1. Size(s) and quantity for each size
2. Flange standard and class (ANSI 125/150, PN10, PN16, 10K, or other GB/DIN/BS/JIS requirement)
3. Body style: wafer or lug
4. Operator: handle (up to 12″), gear, electric actuator or pneumatic actuator
5. Body, disc, stem and seat material preferences, or the medium and temperature so materials can be selected
6. Any documents or inspection requirements your project needs

Price, lead time and documentation are not part of the published product information, so confirm each of them in writing with NINGJIN COUNTY HONGDA VALVE CO.,LTD. before you place an order.