Wilden M15 Repair Kit – 3 Inch AODD Pump Diaphragm Ball Kit

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Description

Wilden M15 Repair Kit — 3″ Air-Operated Double Diaphragm Pump

1. Product Overview / 产品概述

This is a complete repair / rebuild kit for the Wilden M15 (also known as T15) 3-inch air-operated double-diaphragm (AODD) pump with aluminium wetted parts. It restores a worn pump back to original performance without replacing the pump body — Wilden pump castings last 10+ years, so replacing the elastomer and ball set is far more economical than buying a new pump.

Kit de reparación — Bomba de Diafragma Neumática Tipo Wilden M15, 3″, aluminio.

2. Compatible Pump Models / 兼容机型

Pump Model Size Wetted Material Notes
Wilden M15 3″ × 3″ Aluminium Direct fit
Wilden T15 3″ × 3″ Aluminium / Cast Iron / 316SS Identical spec to M15
Wilden PS15 3″ × 3″ Clamped plastic Same elastomer family
Stroke DPB 75 ALB 3″ × 3″ Aluminium Interchangeable
Nomad N15 3″ × 3″ Aluminium Interchangeable
Wilden M16 / M18 (models) 4″ – 4.5″ Aluminium Available on request

3. Technical Specifications / 技术参数

Parameter 参数 Specification 规格
Pump Type 泵型 Air-operated double diaphragm (AODD) 气动双隔膜
Model 型号 Wilden M15 / T15, 3 inch 3寸
Max Flow Rate 最大流量 245 GPM / 927 LPM (52.6 m³/h)
Max Pressure 最大压力 125 psi / 8.6 bar
Suction / Discharge 接口 3″ NPT (female) inlet & outlet
Air Inlet 进气口 3/4″ NPT
Air Exhaust 排气口 1″ NPT
Air Consumption 耗气量 Up to 125 CFM (3.58 m³/min)
Suction Lift 吸程 Dry 16 ft (5 m), wet 23 ft (7 m)
Max Viscosity 最大粘度 25,000 cps
Max Particle Size 颗粒粒径 10 mm (3/8″)
Max Fluid Temperature 介质温度 176°F / 80°C
Housing Material 壳体材质 Aluminium 铝

4. Kit Contents / 套件组成

Component 部件 Qty 数量 Reference P/N 参考件号
Diaphragm, Buna-N / NBR 橡胶膜片 2 15-1010-52
Valve Ball, Buna-N / NBR 阀球 4 15-1080-52
Valve Seat, Buna-N / NBR 阀座 4 15-1120-52
Air Valve, brass 气阀（铜） 1 —
Air Valve Gasket 气阀垫片 1 —
Diaphragm Backing Plate 膜片背板 2 15-1033-01
Glyd Ring 密封环 2 15-1090-01
Pilot Sleeve 导向套 2 15-1060-01
Shaft / Stud 膜片拉杆 1 15-1045-01
Gasket Set 密封垫套装 1 set —

Also available as Wet-End Kit Only (diaphragms + balls + seats) — see Section 9.

5. Elastomer Options / 弹性体材质选项

Material 材质 Temperature 温度 Chemical Resistance 耐介质 Typical Application 典型应用
Buna-N / NBR -40 to 176°F Oils, fuels, general solvents Diesel, crude, hydraulic oil
EPDM -40 to 275°F Acids, alkalis, caustic Water, brine, chemicals
PTFE (with backup) -40 to 356°F Best all-round chemical Aggressive media, solvents
Neoprene -40 to 176°F Oils, abrasion resistant Slurries, coatings
Polyurethane 0 to 176°F Abrasion, high wear Fractured fluid, mud
Viton® / FKM 0 to 400°F Aromatics, high temp Jet A-1, aviation fuel

6. Interchangeability Statement / 互换性声明

This kit contains direct replacement parts dimensionally and functionally interchangeable with genuine Wilden M15 / T15 elastomer components. Reference part numbers are shown for identification purposes only; WILDEN® is the trademark of Wilden Pump & Engineering, and DEENPU is not affiliated with the original manufacturer.

7. Applications / 应用领域

  • Oil & gas drilling and completion fluid transfer
  • Diesel, kerosene, Jet A-1, crude oil loading and unloading
  • Fuel injection and hydraulic oil circulation
  • Fresh water, sea water and brine transfer
  • Chemical dosing (EPDM / PTFE versions)
  • Mud, drilling waste and slurry transfer (polyurethane version)
  • Refinery, tank farm and marine fuel bunker service

8. How to Order / 订货说明

Please specify when ordering:

  1. Pump model — M15, T15, PS15 or stroke equivalent
  2. Kit type — Full rebuild kit / Wet-end kit / Air-end kit
  3. Elastomer — Buna-N, EPDM, PTFE, Neoprene, Polyurethane or Viton®
  4. Housing material — Aluminium (ALB), cast iron or 316 stainless

MOQ: 1 set. OEM / private-label kits accepted.

9. Price Guide / 价格参考

Item 项目 Market Range 市场区间 Our Price 我方报价
Full rebuild kit (wet + air end) 全套修包 USD 450 – 750 USD 480 – 560
Wet-end kit only 湿侧修包 USD 280 – 380 USD 290 – 340
Single diaphragm 单只膜片 USD 25 – 40 USD 22 – 30
Single PTFE diaphragm 3″ PTFE膜片 USD 60 – 70 USD 48 – 58

Prices are EXW Shanghai and subject to elastomer selection, quantity and final configuration. Contact us for a firm quotation.

10. Installation Guide / 安装步骤

  1. Isolate. Close and lock out air supply, then relieve all pressure in the fluid lines.
  2. Remove air-end cover (4 bolts). Keep the air valve in a clean container.
  3. Remove centre section by loosening the 4 tie-rod nuts. Support each fluid housing — they are heavy.
  4. Wet end: unbolt both diaphragms from the centre block, remove the shaft/stud. Press the 4 valve balls out of their seats and discard the balls and seats.
  5. Inspect all new parts. Check diaphragm thickness and ball seating. Do not re-use old balls.
  6. Assemble wet end in reverse: new balls into new seats, diaphragms onto the shaft, into the centre block.
  7. Fit centre section to both housings, tighten the 4 tie rods diagonally in a star pattern to even torque.
  8. Re-install air valve and cover, connect air supply. Always use a Filter-Regulator-Lubricator (FRL) unit.
  9. Leak test at 50 psi for 5 minutes before returning to service.

11. Maintenance Intervals / 保养周期

Service 保养项 Interval 周期
Inspect air valve & filter element 检查气阀滤芯 Weekly 每周
Check for air leaks (soap test) 检漏 Monthly 每月
Inspect diaphragms & balls 检查膜片阀球 Quarterly 每季度
Full rebuild kit replacement 整套更换 Every 8,000–12,000 hours or 12–18 months

12. Troubleshooting / 常见故障

Symptom 现象 Cause 原因 Solution 处理
Reduced flow 输出流量下降 Worn balls / blocked seat Replace balls & seats (wet kit)
Air leaking out of fluid chamber Diaphragm torn Replace diaphragms immediately
Pump runs but stalls Frozen / stuck air valve Clean or replace air valve
Chattering / erratic stroke Backing plate or stud worn Full rebuild kit
No flow at all Closed supply air / frozen elbow Check 3/4″ air inlet, 125 CFM capacity

13. Quality Control & Certification / 质量控制与认证

  • Every kit is pressure-tested on an air bench prior to packing.
  • Elastomer hardness and thickness verified per batch; diaphragms lot-traceable.
  • DEENPU is ISO 9001:2015 certified. Pump reference units carry API 6A / ISO 2858 documentation where applicable.
  • Full material certificates (EN 10204 3.1) available on request.

14. Packing, Lead Time & Contact / 包装、交期与联系方式

Item 项目 Detail 说明
Packing 包装 Individually vacuum-sealed, export carton
Lead Time 交期 In stock 1–3 days; custom elastomer 15–20 days
Warranty 质保 12 months against manufacturing defects
Payment 付款 T/T, L/C at sight, Trade Assurance
Company 公司 Jiangsu Deenpu Petrochemical Machinery Co., Ltd.
Contact 联系人 Linda Hu — sales@deenpu-machinery.com / WhatsApp +86 180 5172 8055