4 inch Butterfly Valve


Wafer Butterfly Valve

What is 4 in Butterfly Valve?

ZECO 4 inch butterfly valve is made of body, disc, stem, seat, stuffing box, gear, etc. ZECO butterfly valve is the most commonly used size on small pipelines, so there is a problem with stocking. Problems when stocking is almost the same with the preparation of delivery. Time is the key factor, usually, the gate valve stocking period is decided by its sealing material. If the valve has to be stocked for several weeks or months, better stocking conditions are needed. Valve is usually stocked indoors and its stocking ambient temperature shall be higher than the dew point. If valves are stocked outdoor, support the valve to make sure it does not contact the earth, at the same time, a water-proof cover shall be added to the valve.

Overview of 4 inch Butterfly Valve

  • Body Material: Epoxy Painted Ductile Iron / Carbon Steel / Stainless Steel
  • Size and Connection: 4 inch Wafer, RF, RTJ
  • Seats: EPDM
  • Disc: Stainless Steel
  • Actuator: 10-position manual lever (lockable in any position)

Dimensions & Weight of Butterfly Valve 4 Inch


Pressure Rating Bore  Face to Face Dimension(in mm) Weight
(in mm) RF Wafer Lug kg
CLASS 150 100 229/127 52/54 52/54 11
CLASS 300 100 305/190 54 54 16
CLASS 600 100 432/190 64 64 35

Features of 4 Inch Butterfly Valve:

  • 1. ZECO 4 inch butterfly valves are easily maintained. At any time pay attention to the sealing surface and shaft seal, When the sealing surface has abrasion or leakage, Generally, use the pressed seal of the screw plate to resolve, when the leakage occurred in the larger, the inner ring can be adjusted plus-one-chip be resolved, if there is damage to seals, plate seals can be removed, the replacement of seals, when the seal leakage, adjust packing gland or seal ring replacement;
  • 2. The Double offset design of ZECO 4 inch butterfly valve is less abrasion, and has excellent sealing capacity;
  • 3. The limit switch device of ZECO 4 inch butterfly valve ensures the right position of open / close;
  • 4. The body, disc, and stem of ZECO 4 inch butterfly valve have sufficient strength and flexibility, sealing can be changed inside the valve.
  • Long service life with reliable seal and without frequent maintenance.
  • Pressure Loss
    • Too much pressure loss will bring an increased cost of correlative energy. Butterfly valves have flow characteristics three times better than globe valves, and about 75% of a same-size gate valve.
  • Multi-Function
    • Flange butterfly valve can be used for on/off service and throttling. They are superior in Multi-function as compared to gate valves. Butterfly valves can be widely used in the chemical field due to trim options and the choice of elastomeric liner.
  • Weight
    • Flange butterfly valves have features of being light in weight and small in size, for example, the weight and size of a 10” butterfly valve are 1/9 and 1/6 of a 10” gate valve. So, the butterfly valve is easy to be installed and saves the cost of the piping system.
  • Bubble Tight
    • Butterfly valves with resilient seat design can be bubble tight as compared to the metal seated gates or globe valves.
  • Easy of operation
    • Butterfly valve offers a 90-degree open to close.
  • Maintenance
    • Properly installed flange butterfly valves are self-cleaning and are less susceptible to failure due to trash material in the pipe.

Material of 4 Inch Butterfly Valve:

No Part Material
1 Body GGG50
2 Seal Ring EPDM
3 Retainer Flange ASTM A182 F304
4 Pin ASTM A276 304
5 Disc ASTM A351 CF8
6 Stem ASTM A276 304
7 Stem Packing Graphite
8 Stem Beating SS304 + PTFE
9 Bolt ASTM A193 B7
10 Nut ASTM A194 2H
11 Yoke ASTM A216 WCB

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